When Miley Cyrus isn't straddling Thomas Sturges, she's straddling the worlds of adulthood and innocence.

Yesterday, we were disgusted to learn that this teen role model has been hanging out with sex tape star Kim Kardashian. We wish Miley would keep better company.

Today, though, we're proud to present a photo that shows Cyrus going back to her youthful roots. The singer/actress is encouraging fans to drink milk and focus on their calcium intake. Check it out:

The text on the ad reads:

Actress by day. Rocker by night. I've got to keep fit to keep up. So I drink milk. Some studies suggest that teens who choose milk instead of sugary drinks tend to be leaner and the protein helps build muscle. It's the best of both worlds.

There you go, Miley Cyrus! Those are the worlds you need to be focusing on.