Credit: Instagram Photo: Which Disney Star Took a Steamy Bikini Pic in Mexico?

Ashley Tisdale wrote that she spent Earth Day in "paradise" as she posted a sexy photo to Instagram.

In the snapshot, the High School Musical star poses in a skimpy bikini next to a tranquil hotel pool with palm trees and the ocean in the background. Looks pretty idyllic to us!

The Tiz is in Cabo San Lucas with boyfriend Christopher French to celebrate a friend's wedding.

Having just appeared in Scary MoVie, the actress just shot a part in the Rebel Wilson comedy pilot Super Fun Night.

Check out the steamy pic in the video below!