Britney Spears has topped a new online poll to find the sexiest former child star.

The "Toxic" singer beat out Mila Kunis and former boyfriend Justin Timberlake for the number one spot on the TinyBytes.com survey.

Miley Cyrus and troubled Hairspray star Amanda Bynes rounded out the top five, and Spears and Timberlake's former Mickey Mouse Club co-star Christina Aguilera also made the list - at number eight.

Meanwhile, Jessica Alba, Leonardo DiCaprio, Ricky Martin and Christina Ricci were among the top 10.

Slideshow: Britney Spears - Sexy Over The Years