In the new movie "Battleship," which comes out May 18, Rihanna takes on her very first movie role as a member of the United States Navy. So the singer, who's known for her fierce fashion sense both on and off the red carpet, naturally had to trade in her trendy wardrobe for fatigues during filming. "I like that it was a role that wasn't about being sexy or anything in that way. It was really down to business," she said in an interview with "The Thread." And surprisingly, the pop star enjoyed her new look! "I loved not having to wear heels. I loved not having to think about my clothes. I loved not having to think about makeup and hair. It was just tattoos, wig, a uniform, and go." See what else Rihanna had to say about the physical training she endured to prepare for the part, why the experience was humbling, and more on this episode of "The Thread"!

Whether pregnant as she is now or not, reality star Kourtney Kardashian, 33, is always effortlessly chic. And this spring and summer, when the weather is sunny and warm, we want to be too — preferably in clothes that we can just wash and go in. So save your time and money for that trip to the dry cleaners, and check out these suggestions for washable and stylish ensembles on this episode of "The Thread."

Funny lady Tina Fey and former first daughter Chelsea Clinton aren't exactly fashion icons. Tina, of course, is known for her Sarah Palin impression on "Saturday Night Live" and "30 Rock," the show which she produces, writes, and stars in, but her off-screen wardrobe choices are usually more about comfort than style and even, well, a little frumpy. "I almost don't have time during the year to wear clothes," the mom of two recently revealed to People magazine. "I sort of roll out of bed into some pair of jeans and the top of my pajamas, come [to work] and then put on clothes. Then at the end of the day I put the pajama top back on and go home." Chelsea, on the other hand, who has traditionally shied away from the spotlight no matter what she was wearing, surprised us all when it was announced last fall that she would be an on-air correspondent for NBC News, which she does in addition to her work with her family's charitable Clinton Foundation. So what happened when the two were spotted out in the same red lacy dress from designer Oscar de la Renta just 16 months apart? It gives us the chance to play another round of our favorite game by asking ... Who wore it better?

Tina Fey (Jeff Vespa/WireImage)Chelsea Clinton (Larry Busacca/Getty Images)