Wanna know what's actually behind the strength of superhero quartet Fantastic Four? Apparently, it's none other than milk as they all can now be spotted having a milk mustache on their faces.

Yes, in the anticipation of "Fantastic Four: Rise of the Silver Surfer" to hit the theaters, the team has become the latest icon featured in "Got Milk?" advertisement, a campaign made by National Milk Processor Board to promote the health benefits of drinking the nutritious liquid. Poster containing all the four characters as presented in the movie takes its debut in the May issue of Marvel Magazine.

In addition, fans of the series are encouraged to go to bodybymilk.com not only to watch trailer for the flick or find out their most favorite one, but also to bid to win awesome Fantastic Four auction items like Xbox games and Circuit City Gift Cards.

The follow-up to 2005's "Fantastic Four", "Surfer" still has director Tim Story as the helmer with Avi Arad, Bernd Eichinger, and Ralph Winter returning to producer's seat. 20th Century Fox has confirmed to release the picture on June 15, 2007, which also becomes the opening day of "Nancy Drew" and "Eagle vs Shark."