Brad Paisley continues to treat Carrie Underwood like a kid sister. The two country superstars are preparing up for their third stint co-hosting the CMA Awards next month, and the ‘Camouflage’ singer is getting started with the jokes early.

In a recent tweet, Paisley said, “Hadn’t seen Gooberwood in a while, til today. She looks…uh… healthy.”

He added this picture of the previously very trim and fit country beauty. Now we can’t be completely sure that Underwood hasn’t grown three chins in recent weeks or months, but she was looking her best at the HeartRadio Music Festival in Las Vegas last month.

A more likely explanation for Underwood’s increased buoyancy is an iPhone app that allows one — like Paisley — to alter a photo before uploading it to Twitter. It’s the second time Underwood has been a victim of Paisley’s phone. Last month, he tweeted, “Strange who you run into at the proctologist. Err, I mean recording studio.” This picture wasn’t doctored.

The two also starred in Paisley’s video for his most recent chart topper, ‘Remind Me.’ While Paisley has just finished his H2O II Tour, Underwood is currently working on a new album. The new project will be her fourth studio album, the first since 2009′s ‘Play On.’