(contactmusic.com) - Shakira and Beyonce Knowles' steamy Beautiful Liar video has beaten promos by Rihanna, Justin Timberlake and new mum Christina Aguilera to claim the top spot in a new Sexiest 2007 Videos list. The clever film, in which the Colombian pop star and Knowles appear to morph into each other, beat Rihanna's Umbrella to gain the number one place in a new Playboy magazine poll. Justin Timberlake's all-wet pool kissing session with Scarlett Johansson gave his What Goes Around... Comes Around video third place, ahead of Gym Class Heroes' Clothes Off and Candyman by Aguilera.