Credit: Amber Holcomb on Instagram Photo: Amber Holcomb Shows Off Baby Bump

Guess who's showing!

American Idol Season 12 contestant and third runner-up Amber Holcomb announced her pregnancy on Facebook on August 13, posting a photo of her sonogram.

Now she offers more proof: a bump-y Instagram snapshot!

In the photo, Amber wears a denim vest over a crop top, revealing an itty bitty baby belly underneath.

The father-to-be is Amber's boyfriend, Lamar D. Denson.

Amber and her fellow Season 12 alums are busy crisscrossing the continent on the American Idol Live! Tour, on which they have seven more waypoints between now and the end of August.

We hope that Amber and Lamar get some well-deserved R & R after that! Congrats again, girl.

Source: Amber Holcomb on Instagram

Dan Clarendon is an assistant editor at Wetpaint Entertainment. Follow him on Twitter and Google+!