Pop star Avril Lavigne has enlisted the help of another celebrity friend for her new music video after unveiling actor Billy Zane as her mystery guest star. The singer previously recruited The Wonder Years actress Danica McKellar for the promo to Rock N Roll and teased fans with an announcement about another surprise guest appearance on her Twitter.com page on Thursday (15Aug13). She encouraged fans to get the video's name trending on Twitter in order for her to release a new teaser writing, "I've got a surprise to share from the #RockNRoll video!! Wanna see it? Tweet #SaveRockNRoll (sic) to unlock the new teaser!" Lavigne finally put her fans out of their misery and posted a sneak peak of the video, which features the Titanic star as a warrior wearing a samurai sword strapped to his back. Zane also took his his account to reveal that starring in the video has made his rock and roll dreams come true, adding, "Wax on! Dig this #AvrilLavigne (sic) milestone. It's all part if my rock n roll fantasy." The full length video for Rock N Roll will premier on 20 August (13).