T-Shirts

Peter Wintersteller/Berliner

In spite of Kristen Bell’s busy acting career, the Couples Retreat star still took the time to make saving the world look stylish. Last week, Bell joined Pete Wentz and Rachel Bilson to co-host the Guess/Vanity Fair party in Los Angeles to launch special edition organic Guess T-shirts that benefit the nonprofit organization Invisible Children. Pairing one of the T-shirts with a sexy Vena Cava dress and Christian Louboutin pumps, Bell talked to PEOPLE about her involvement with the organization, which promotes youth education and economic development in war-torn regions of Central East Africa. “It’s just standing up for humanity, which I think is really important for us to do for each other,” she said. Bilson agreed, saying, “It’s also important to spread the word about these T-shirts. You can buy them, and all the proceeds go to Invisible Children.” The party stayed lively with Wentz behind the DJ booth and attendance by celebrity friends such as Annalynne McCord and Eliza Dushku with boyfriend Rick Fox. Buy your own Guess Invisible Children T-shirt for $26 on Guess.com, with 100% of the proceeds going to the organization. –Susan Yara

Richie Buxo/Splash News Online

From dying her hair black to her new rock ‘n’ roll style, Kristen Stewart is really getting into character. While filming a Joan Jett biopic, Kristen has adopted a uniform of vintage rock tees and skinny jeans, and has even gone so far as to hang out with the rock legend she is portraying. (We can hardly tell them apart!) While this new punk look is genres away from Twilight’s Bella Swan, we think Kristen totally pulls it off. Just yesterday, she turned up to Comic-Con in another Chaser T-shirt featuring early-’80s hardcore punk band Minor Threat. And what’s better, it’s totally affordable! Get Kristen’s Chaser “Minor Threat” T-shirt, $22, at chasermerch.com..

Courtesy of H&M

For its second season of Fashion Against AIDS, H&M has teamed up with stars like Katy Perry, Dita Von Teese, Estelle, Cyndi Lauper, Yoko Ono, N.E.R.D and more. Each star has collaborated with H&M on designs for T-shirts, T-shirt dresses, vests and bodysuits to spread the word about safe sex through bold slogans in vibrant colors. Katy Perry’s safe sex message, “It’s What’s On The Outside That Counts,” is printed in bright script on a body suit and T-shirt. Dita Von Teese offers an alluring image of her iconic red lips and arched brow on a cute cap-sleeved T-shirt while Cyndi Lauper takes an 80’s approach with her iconic slogan, “Girls Just Want to Have Safe Sex,” scrawled in what looks like hot pink lipstick on a tank top. The collection will hit H&M stores on May 28, with 25% of the sales of each item will be donated to youth HIV/AIDS awareness projects.

Credit: Bauer-Griffin; GSI Media; Flynet

Not only did Rachel Bilson take a front-row seat at pal Brian Reyes’s show during N.Y.C. Fashion Week last Thursday, but she’s his best model on the streets of Los Angeles this week! The newly-engaged actress wore not one but three of Brian’s tops this week. First, she wore out his gray T-shirt with black layers, switching to his white T-shirt with Helmut Lang jeans the next day. She just keep going pairing her Brian Reyes marble-print top with a black vest and wide-leg pants. We’re loving her accessories too — check out her red Miu Miu purse and her green Chloe chain strap. No wonder Rachel is one of our favorites for her off-duty style savvy. Buy a Brian Reyes T-shirt for yourself at shopbop.com, $240.

Pacific Coast News

No matter what’s happening in her life, Madonna is still in love with British brand Bodas’s organic supima cotton T-shirts. The singer wears them “to work out, to run errands, to go out — she loves them for everyday,” a source tells PEOPLE. (She also likes them for primetime — she wore a black short-sleeve T in her 4 Minutes video with Justin Timberlake.) A Bodas spokeswoman tells PEOPLE that the singer most recently purchased a handful this summer. “She wears them out, and then her assistant comes in and buys five more,” she says. And unlike, say, Madonna’s one-of-a-kind designer tour outfits, you can actually purchase these looks. They’re $90 for a tank top or short sleeve, and $98 for long-sleeve styles, available at www.bodas.co.uk or at Barneys New York. – Courtney Rubin

John Sciulli/Berline

Show your love for one of TVs most fashionable zip codes by wearing a 90210 T-shirt. CBS Consumer Products and 90210 have partnered up to release an array of vintage-style tees available at Kitson Studio in West Hollywood. The collection was unveiled this week during an intimate soiree at Kitson with a handful of cast members, including Dustin Milligan (Ethan), Jessica Stroup (Silver)– in LNA– and Ryan Eggold (Ryan). As guests sipped cocktails and shopped for T-shirts, the band Karmina performed “The Kiss,” which was heard in an episode of the CW’s 90210. The T-shirt designs include a classic cast shot from the original 90210 and another one that says, “Meet Me at the Peach Pit.” If a version from the newer West Beverly is more your style, choose sides by wearing either a “Team Naomi” or “Team Silver” T-shirt. The $28 shirts are available at the Kitson store on famed Robertson Boulevard or at www.shopkitson.com.

Starbux / WENN

In light of the terrible plane crash that left Travis Barker and DJ AM badly burnt and four others dead, Barker’s Famous Stars and Straps clothing line is producing exclusive T-shirts in memory of the former Blink 182 drummer’s personal assistant Chris Baker and security guard Charles Still. The shirts were designed by pro skater and Famous team manager Felix Arguelles and Famous art director and artist Maxx “maxx242″ Gramajo. All the proceeds from sales of the shirts will benefit the memorial funds set up for Chris Baker and Charles “Che” Still. A source tells PEOPLE, “Everyone that is a part of the Famous family are really close, so Chris and Che were brothers to everyone. The shirts were made to honor them and support their families.” The memorial T-shirts will be available exclusively at Famoussas.com and at The Fast Life store in L.A.