Kailyn Lowry is a hot mama!

The Teen Mom 2 star is currently enjoying some fun in the sun while vacationing in Hawaii, but that didn't stop her from sharing a booty snapshot while swimming underwater!

MORE: Javi Marroquin Hangs Out With Jo Rivera, Vee Torres While Kailyn Lowry Jets Off to Hawaii

The mother-of-two captioned the Instagram photo, "Mermaid wishes & starfish kisses!"

Fans immediately took to the comments to gush over Kailyn's recent Brazilian Butt lift, with one follower asking, "How do you not float back up with your big ol' booty?"

Amid her split with Javi Marroquin, the reality star has definitely been showing what her ex is missing out on. Recently, Javi was spotted kissing a mystery woman while out partying with fellow MTV star Jay Gotti.