Happy Birthday, Nina Dobrev — See Her 23 Most Sassy, and Sexy Shots!

Nina Dobrev turns 23 on Monday, and we're getting an early jump on celebrating The VampireDiaries' star's big day with a look back at her sassiest photos. She's become a red-carpet staple at award shows and is often spotted on the arm of her costar and real life boyfriend, Ian Somerhalder. 

Click "Launch Gallery" below to see her sexy shots, and happy birthday, Nina!