Caption Miley Cyrus and Justin Gaston!

By: Celebuzz / May 4, 2009

The 20-year-old underwear model and his 16-year-old mega-successful girlfriend were caught in what seems to be a very serious conversation on Saturday afternoon.

Both clad in white T-shirts, jeans and their ponytails of choice, it doesn’t seem like Miley Cyrus and Justin Gaston were having the best of times.

We want your opinion, folks. Were they arguing about Nick Jonas? Twitter? Religion? Justin’s ridiculous new hair? The possibilities are endless.

Celebuzzers, take to the comments section and have your say: What were they talking about?