Barton's big reveal beat Aussie model/actress' Sophie Monk's nude scene in Sex & Death 101.

Heather Graham's bare-all moment in Adrift in Manhattan rounds out the top three on blogger MrSkin.com's sexy list.

But none of the films land on the blogger's all-time top 20 list, which is topped by Phoebe Cates' swimming pool scene in Fast Times At Ridgemont High.

Also making the 2008 list are newlywed Asia Argento (The Last Mistress), Neve Campbell (I Really Hate My Job) and Anna Faris (The House Bunny).