Last night, before going off on hot Valentine's Day dates, Sports Illustrated hotties Hilary Rhoda, Anne Vyalitsyna (Adam Levine's girl and video model), Irina Shayk, Christine Teigen (John Legend's girlfriend), and more stopped by the David Letterman studios. What was the occasion? To unveil the newest SI cover girl. Drum roll please, it's Cristiano Ronaldo's flame, Russian model Irina Shayk. Read more

Matt Damon stopped by The Late Show With David Letterman in NYC yesterday. The actor was there to promote his new movie, True Grit, but much of the conversation was dominated by talk of his newborn baby, Stella. Matt joked about his 12-year-old daughter almost being old enough to babysit her three younger sisters and stuck to the story that he and Luciana are done after number four. Luciana Read more

It's the first day of the PopSugar 100 bracket, and we're so excited to see how you're voting! We already have some big surprises like newcomer to the list Jon Hamm putting up a good fight against Jessica Simpson. Plus, Jay Leno and David Letterman are locked in yet another battle. Make sure to cast your votes for a chance to win a Chanel bag — and click here to start voting. Check out today's Read more

Reese Witherspoon was just one of the lovely ladies to appear on the Late Show in NYC yesterday. She stopped by in a bright red dress to promote This Means War and shared a funny story about having to explain the term "d-bag" to her mother. David Letterman also welcomed Sports Illustrated's newest swimsuit cover girl, Kate Upton, and her fellow models. The 2012 Swimsuit Issue was unveiled last Read more

Kate Upton is the cover girl of this year's Sports Illustrated Swimsuit Issue! Her honor was revealed last night on the Late Show in NYC, where Kate spoke with host David Letterman about nabbing the front of the annual magazine. Kate's the latest in a long line of two-piece-clad models to claim the title — click through to see her bikini shots, and make sure to check out all the Sports Read more

Ryan Reynolds looked dapper in a skinny tie and slacks as he arrived for his appearance on The Late Show With David Letterman this evening in NYC. The actor is back from a recent trip overseas, where he started his latest round of promotional duties for Green Lantern with a visit to BBC Radio's London studios. After his TV appearance tonight, he'll be hopping on a plane yet again, heading to LA Read more

Sarah Michelle Gellar stopped by the Late Show in NYC to chat with David Letterman about Ringer yesterday. She was just one of the famous faces to sit down with Dave, since Super Bowl MVP Eli Manning was also a guest on the show. SMG apparently tried to meet the NY Giant backstage, but told Dave that "his security wouldn't let me near him. It was weird. I was trying. I was like, 'No really, I'm Read more

Michelle Williams posed for photographers before entering the Late Show With David Letterman studios in NYC last night. She was decked out in a floral dress from one of her go-to designers, Erdem. The interview Michelle taped will air on David Letterman's Friday episode. Michelle's home in NYC to spend time with her daughter, Matilda, and friends, but she clearly hasn't stopped making the rounds Read more

Jennifer Lopez and her boyfriend Casper Smart stayed close as they left their NYC hotel last night. The duo were in the Big Apple while J Lo promoted her new reality show, ¡Q'Viva! The Chosen, with appearances on The Today Show and The Late Show. J Lo chatted with David Letterman about getting married multiple times saying, "I believe in love." It looks like her current relationship with Casper Read more

Jennifer Lopez ran around NYC with her boyfriend Casper Smart yesterday. He was by her side for a stop by the Late Show, where J Lo chatted with David Letterman about her new reality show ¡Q’Viva! The Chosen. She cohosts the program with her soon-to-be-ex-husband Marc Anthony, so conversation between J Lo and David naturally moved toward the split. Jennifer said of shooting with Marc, "It’s Read more