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Lady Gaga has been flaunting her love for all things Muppet for a few months, from her Animal skirt to her date with Kermit the Frog at the VMAs. And now Katy Perry has gotten in on the act, turning up today at Jean Charles Castelbejac’s fashion show in a festive frock printed with all our favorite fuzzy friends. We love that pop music has room for two whimsical fashionistas, but we can’t help but compare their dresses. Tell us: Who wears her Muppet dress better?

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First her man, and now her style! Looks like Lady Gaga has a lot in common with Miss Piggy these days. When the outrageous pop star showed up to the VMAs arm-and-arm with Kermit the Frog, we knew Miss Piggy wouldn’t be happy. But to add insult to injury, Lady Gaga turned up at the Marc Jacobs show wearing the exact same dotted dress Marc Jacobs had customized for the Muppet! And while Lady Gaga might hang out with Madonna and be the talk of New York Fashion Week, you just can’t mess with a feisty pig. We’re sure Miss Piggy isn’t going to stay quiet for long, but until then… Tell us: Who rocks Marc Jacobs better: Miss Piggy or Lady Gaga?

Click here to vote on more star fashion faceoffs and be sure to check out all of our coverage of New York Fashion Week here!

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After seeing double at the VMAs, Shakira took to the airwaves on 102.7 KIIS FM’s On Air With Ryan Seacrest and talked about her real life fashion faceoff with Pink, in crystal-studded leather Balmain minidresses. “The funniest thing is that my stylist told me, ‘You’re going to wear a one-of-a-kind dress, nobody else in the world has it!’ And I was like, well, you know, I like the dress I don’t really care if anybody else has it or not — but how was I going to imagine that Pink had the same dress! Luckily I was on the red carpet first, so technically…” she jokes of her wore-it-first status. And Shakira discovered that her style competition took a similarly light-hearted attitude to the incident. “I approached Pink and I was like, ‘Pink, look at us, look at us!’ And she’s like, ‘oh my god, this is the funniest thing, get out of here!’” Click below to hear Shakira talk about the night. Tell us: Would you be able to laugh off a real life fashion faceoff as well as Shakira and Pink?

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One dress, one night, two divas — it was a real-time fashion faceoff last night as Whitney Houston and Madonna both hit the scene in Europe in their snow leopard-print Dolce & Gabbana dresses. Madonna hit the after-party for her Milan concert at the Gold restaurant, owned by longtime pals Domenico Dolce & Stefano Gabbana, along with her “good friend” Jesus Luz in her printed sheath. Meanwhile, in London, Whitney attended a playback party for her new album I Look to You in the same curve-hugging dress. We love seeing both singers looking so hot so much that we can’t decide who wears it better — but we bet you can! Vote in our poll below.

Cousart-Rios/JFX, Mavrix

Ever since she played Daisy Duke in Dukes of Hazzard, Jessica Simpson has made the character’s iconic cutoff shorts one of her own style signatures — pairing them with everything from floaty floral blouses to sexy bustiers for her stage costumes. But looks like her little sister Ashlee has the same idea, taking her adorable baby son Bronx out in her own faded cutoff shorts. We can’t help but compare the two — and be totally wowed by their shared genes for fabulous legs! We want to know what you think, though. Vote in our poll below, and tell us: Which Simpson sister wears her cutoff shorts better?

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She may have gone from a sky blue hue to something a little more subdued, but it looks like Blake Lively’s buzzed about Rag & Bone Peasant dress is still her go-to look for dates with boyfriend Penn Badgley. Just two weeks ago, both the Gossip Girl star and California girl Cameron Diaz chose blue striped Rag & Bone tunic dresses for hot dates, causing the frocks to sell out almost instantly online after we ran the story. This time around, Blake settled on the gray striped version — and even took a cue from Cameron and wore it looser. In case you missed out on grabbing the blue tunic, you can get the gray striped one now, $325, at madisonlosangeles.com. Tell us: Which color do you like better on Blake — the blue or gray?

Limelight; Abbot/Daniel/INF

What to wear on a summer date with a hot guy? Well, according to Blake Lively and Cameron Diaz, it’s Rag & Bone’s Peasant dress. The Gossip Girl star stepped out for dinner with her costar boyfriend Penn Badgley in her blue and white dress last week in N.Y.C., while the California girl hit the streets of West Hollywood with her new guy, British model Paul Sculfor. Both blondes look totally breezy and cool in their blue dresses — why not nab one for yourself on sale? Get it at eluxury.com now for $229, reduced from $325. Tell us: who wears their Rag & Bone dress better? Blake or Cameron?

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We’ve been seeing outrageous star fashions all over Hollywood recently. And when Kate Bosworth first stepped out in these funky Chloe wedges at the beginning of the month while promoting her new movie 21 we thought they were a little questionable. Kate, however, is known for pushing the fashion envelope and made them seem totally cool. Then this weekend, Heidi Montag followed in the fashionable star’s footsteps, sporting the $750 patent wedge booties while promoting her clothing line, Heidiwood, at Kitson in L.A. — and we can’t say we loved the look quite as much on her. The shoes somehow seem a little too “high-fashion” for the Hills star. But we want to know what you think. Tell us: Who rocks the designer heels better: Kate Bosworth or Heidi Montag? Would you wear them?

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Mariah Carey is the ultimate sexy diva, while Miley Cyrus is the quintessential good girl. What do these two singing superstars have in common? Apparently, their taste in fashion! We saw Mariah step out in her clinging purple sweaterdress, cropped black jacket and black suede boots last month, only to spot the Hannah Montana star in a practically identical outfit in Toronto over the weekend. We love that Miley put her own sweet spin on the outfit, but we can’t help but giggle over how similar they are! Tell us: Who wears her purple dress better? Mariah or Miley?

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Imagine how embarassed you would be if you walked into a party and saw another woman wearing your exact same dress. Now imagine doing it on the red carpet with hundreds of photographers! Jessica Simpson and Deborah Norville both attended last night’s Accessories Council Excellence Awards in New York in the exact same cheetah-print Michael Kors sheath dress — and both had to not only make it down the red carpet, but also appear onstage! We think both blondes look great in their trendy dress, but we want to know what you think! Tell us: Who looks better in their Michael Kors dress: Jessica or Deborah? What would you do in their situation?

Think the dress would actually look best on you? Get it for yourself, $1595 at saks.com.

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We can’t say enough how amazing Halle Berry looks pregnant — although we imagine we’ve got a few more oohs and ahs before she’s due. So, it’s no surprise that the hot momma-to-be is still wearing non-maternity wear, but only Halle could pull off a legendary Dolce & Gabbana corset dress in her second trimester! But we’ve seen this particular slinky number before, on the decidedly sveltve figure of Mandy Moore. While it’s not exactly fair to compare those who are and are not expecting a child, we still get a giggle out of seeing the two stars in the same dress. Tell us: Who wears her Dolce & Gabbana dress better? Do you like that Halle is wearing sexy clothes during her pregnancy?

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We’ve all been staring at Jennifer Lopez’s loose dresses with a suspicious eye for quite a while now — even Diane Sawyer is wondering what’s going on under there! But we do have to remember that tent dresses are stylish this year, so even the most svelte stars without a hint of baby bumps have been rocking them — like Emmy Rossum, who wore her Temperley London dress to the premiere of Zodiac back in March. Now, we can’t say why J. Lo chose to wear her ivory trapeze dress last night after her Madison Square Garden show, but we do think that both ladies look lovely in their flowing dresses. Tell us: Who do you think looks better in her Temperley dress? Jennifer or Emmy?

Gregg DeGuire/WireImage; Fitzroy Barrett/Landov

A couple of weeks ago, we asked you Who ruled the red carpet: Ashley or Vanessa? And the strapless BCBG dress that Ashley Tisdale wore to the premiere of High School Musical 2 had many, many fans. Well, it looks like Kelly Clarkson agreed with you, because she wore the exact same handkerchief hemmed number last night to the Teen Choice Awards in Los Angeles. To finish the look, both ladies chose to wear simple bracelets and sparkling heels. It’s a tough decision, but we know you can make it: Tell us, who wore their BCBG dress better? Kelly or Ashley?

Want more High School Musical 2 style? Click here. And you’ll always find lots of Fashion Faceoffs in our weekly gallery.

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We knew that Mischa Barton loved her Juicy Couture lace dress so much that she had to have it in two colors, but now we can add Ashley Tisdale to the list of stars who have this airy frock — we’ve spotted Debra Messing and Molly Sims in the style too! Part of the fun of multiple stars wearing the same outfit is to see how differently they accessorize, and this Fashion Faceoff is no different! Mischa adds a touch hipster flair with her straw fedora, while Ashley goes luxe with her multi-colored Louis Vuitton bag. We want to know what you think! Tell us: Who wears their green lace dress better: Mischa or Ashley?

Love the dress? Get it in white at neimanmarcus.com, $328.

Click here to see more Fashion Faceoffs in our gallery.

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Back in April, Britney Spears topped this floral Tibi dress off with her signature straw cowboy hat and matching boots while coming out of her dance studio. Just last week Katherine Heigl gave the same summer frock a feminine touch with strappy flat sandals and a delicate drop necklace on the set of her new movie, 27 Dresses. We love this Tibi dress, but unfortunately the older style is no longer in stores. Get the updated Luau floral dress, on sale $160 from $319, at net-a-porter.com. Tell us: Who do you think wears the Tibi dress better–Britney Spears or Katherine Heigl?

Visit our gallery to vote on more Fashion Faceoffs!

Lisa Mauceri/INF; JOHN BARRETT/GLOBE

It’s the battle of the Fashionista vs. the Diva! We spotted (and talked about!) Mariah Carey in her peek-a-boo Azzedine Alaia dress at a charity event last week — only to spot Victoria Beckham doing an interview in Central Park with Matt Lauer in the ivory version of the dress only a few days later! It actually doesn’t surprise us that these two ladies have the same taste — they do both love revealing a certain amount of skin in minidresses, after all. But we want to know what you think! Tell us: Who wears their Alaia dress better: Posh or Mariah?

Vote on more Fashion Faceoffs in our gallery by clicking here!

RAMEY; Asadorian/Splash News online

Same day, same city, same dress — both Sarah Michelle Gellar and Liv Tyler hit the streets of N.Y.C. on Tuesday in their Tart “Denise” dresses. Both women look city-chic in their easy black jersey dresses and long gold chains. Sarah Michelle pairs hers with bow-topped ballet flats and a quilted Chanel bag, while Liv goes for flip-flops and her favorite Be & D tote. We think both women look great — and we’re loving the dress itself! Tell us: who do you think wears the dress better? Sarah Michelle Gellar or Liv Tyler?

Join the Faceoff! Pick up your own Tart “Denise” Dress, now on sale from $180 to $126 at azaleaonline.com.

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With all of Oprah Winfrey’s wealth and connections, you might think she would be exempt from Fashion Faceoffs — but not so apparently! The media mogul picked a hot-off-the-runway Gucci gown to wear to the Vanity Fair Oscar Party back in February, which just reappeared this weekend on the newly crowned Miss Universe, Riyo Mori of Japan. Don’t let the sash distract you — we want to know who really rocks the dress! Tell us: Who wears their Gucci gown better: Miss Universe or Oprah?

Click here to vote on more Fashion Faceoffs!

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Nicole Richie’s Madison Marcus tunic was a big hit with People.com readers — and apparently with Halle Berry too! The Oscar winner stepped out for a grocery shopping in her chic black silk dress over Memorial Day weekend, while the petite Simple Life star wore hers to a salon appointment last month. We usually don’t think of Nicole and Halle having similar style, but this easy tunic looks terrific on both of them! Tell us: Who do you think wears the dress better? Nicole Richie or Halle Berry?

Click here to vote on more Fashion Faceoffs!

Rex USA; George Pimentel/WireImage

Whenever we see gorgeous gowns coming down the runway, we always try and imagine which star will rock it on the red carpet. Sexy and slinky? Give that to Christina Aguilera. Daring and elegant? Calling Cate Blanchett! So, we love it when stars step out in the runway confections, like Rosario Dawson did this week at the Death Proof premiere in Cannes. She dazzled in the elaborate crystal-encrusted showstopper — previously modeled by Gisele Bundchen at Dolce & Gabbana’s show back in February. (We spotted Naomi Campbell in a similar version, too!) We think the gown is to die for and both women look stunning. Tell us what you think: Is the dress better on the runway or the red carpet?