Heidi Klum dares to show her buttocks in a naughty bikini while posing topless.

Heidi Klum has a “hot girls’ summer!”

The 49-year-old Heidi Klum America’s Got Talent judge showed the world she’s still rocking it by showing off her ass in a new topless swimsuit selfie posted to Instagram over the weekend.

In the photo, Klum can be seen smiling at the camera as she looks over her shoulder. While wearing a pair of mischievous white bikini bottoms as the sun sets behind the mountains in the background.

Klum turned off comments on the post. Instead, as the model gears up for the Season 3 release of Amazon Prime Videos Making the Cut. Klum opened up about close relationship with co-host Tim Gunn during a June interview with TODAY with Hoda & Jenna.

The 2 have worked together since their days on the long-running fashion competition show Project Runway, which debuted on TV in 2004.

“I’ve always said we were the longest marriage I’ve ever been in,” Klum said. “Me too,” Gunn agreed, and the Emmy winner added, “and have been for 18 years.”

When asked by Jenna Bush Hager why their working relationship was going so well. Klum turned to Gunn and quipped, “Maybe it’s because I only understand every third word you say. He tells me all these amazing words like “fun,” and I don’t know. You have such a vocabulary [words].” “That’s because I’ve been a teacher for many years,” the 69-year-old replied. Gunn was on Parsons School of Design faculty from 1982 to 2007.