10. Chase Crawford: The 22-year-old Texan started out as a model before moving to Los Angeles to pursue an acting career. The teen heartthrob solidified his hunk status as soon as his character, Nate Archibald, hit the screen on the CW's latest water cooler hit, "Gossip Girl." Although he's been linked with Carrie Underwood, she's repeatedly denied their relationship is serious. 9. Blake Lively: Chase's "Gossip Girl" co-star saw her stock rise after her role in "The Sisterhood of the Traveling Pants" won rave reviews. Ever since, the 20-year-old has been in high demand. She was recently featured on the cover of Teen Vogue, and a "Sisterhood" sequel is set for this summer. 8. Adrian Grenier: Thankfully the 31-year-old (best known for his role as Vincent Chase on HBO's "Entourage") never cemented anything with a certain socialite he's been spotted with in the past year. Otherwise, we'd consider him skanky, not sexy. 7. Minka Kelly: Now that the "Friday Night Lights'" fox is back on the market (thanks to her ex, John Mayer), she can consider calling up her other ex, the incredible Chris Evans ("Fantastic Four's" Johnny Storm) ... not that a hottie like this should ever have to call a man for a date. 6. John Mayer: Minka's ex has been linked to many gorgeous girls in Hollywood, but this Grammy-winning bachelor is still on the prowl for Mrs. Right (now). Fortunately for brunettes around the world, he seems to be done with dumb blondes like Jessica Simpson. 5. Kate Hudson: The Golden Globe-winning goddess ("Almost Famous") has Goldie to thank for her good looks and bubbly personality, but she also happens to be a box office draw and a hot mama, having birthed a son (Ryder Russell Robinson) in 2004. 4. Wentworth Miller: Perhaps the "Prison Break" playboy's multi-racial background adds to his sex appeal. Perhaps the attraction has something to do with his piercing eyes, those luscious lips, the bulging biceps... 3. Carmen Electra: You'd think the former "Baywatch" babe was born in the 1800's because she's been famous for so long, but the eternally beautiful 35-year-old model/dancer/singer/actress/pinup/former Prince muse continues to star in men's fantasies every night of the week. 2. Ryan Phillippe: The delicious dad of two set hearts a flutter with early, shirtless roles in "White Squall," "54," and "Cruel Intentions." 10 years later, he's considered one of the best young actors Hollywood has to offer. He also happens to be the hottest! 1. Rihanna: The Barbadian bombshell and former beauty pageant contestant is currently uncontested on the sexy and single celeb circuit. With a deadly combo of killer looks and killer hooks, the Grammy-winning songbird is undoubtedly perched atop our list.