When Erika Christensen thinks back to her first kiss, it's intertwined with another first: the first movie she ever appeared in. When she was 12 years old, she told her parents she wanted to pursue acting as a career. They gave their full support, but in private, they put a deadline on her entertainment career of six weeks — if she wasn't experiencing any success, they would pull back and reconsider. Luckily, the talented star booked three national commercials in that time, including her debut in an ad for McDonald's.

Less than a year later, Christensen got her first role in a movie, a big-screen version of the classic TV show "Leave It to Beaver," which was released in 1997. The star recalled to CNN, "My first studio film — 13 years old and a film lead! I was out of my mind excited." She played Karen, the main character's puppy-love interest, and along with that came a kissing scene.

Her young-love co-star was Erik von Detten, who had the role of Wally. It was a first for him, too — his first on-screen kiss. (He would later go on to steal Mia's first kiss when he was cast in "The Princess Diaries.") The two had to rehearse their scenes together, and that's when Christensen got her first pucker-up. Subsequent kisses were captured by the camera, and the memory of her first kiss is just a remote control click away.