Baby Inside is the follow up to Evian’s hugely successful Roller Babies video that not only went viral but was inducted into the Guinness World Records as the Most Viewed Online Video Advertisement (over 25 million as of 8/19/09).

Both videos are part of the integrated Live Young campaign created by BETC Euro RSCG, Paris. It includes print ads, TV commercials, and social media.

Watch the video above (best to keep your eye on the T-shirt to get the full effect of the dancing baby) and then participate by adding your own video clip to Evian’s “longest music video” at Let’s Baby Dance microsite (or via an iPhone App). I did.