Heidi Klum is no stranger to having her body exposed. As an international supermodel and a former Victoria’s Secret catwalk star, the German beauty is used to getting photographed with skimpy bikinis and, sometimes, non-existent clothing. But even for her, overexposure is painful. Hence, she showed off her badly burnt but still perfectly formed naked bum on Instagram.

The 40-year-old mother of four is in the Bahamas enjoying the sun and sand. On Sunday, however, she reported that she had a very minor setback. Her scanty black bikini bottom proved to be an inadequate protection from the harsh rays of the sun, leaving her with noticeable line and painful sunburn on her body parts not covered.

Need visual proof? Here’s her sunburn and her bum crack:

"Ouch!" Heidi Klum captioned her photo on Instagram

Heidi wasn’t going to let a little bummer incident ruin her fun, though. It is clear that she was making the most of her vacation, judging by the photos she shared on her Instagram account.

Showing off her perfect figure in itsy bitsy bikini
Celebrating fourth of July

Going nude isn’t new to Heidi. She had said in a previous interview that she was comfortable in going nude in front of her family.

“I think it’s because I grew up in a very easy-going family where my parents were always naked,” she explained to Tatler in 2010. “My parents are still naked. I mean, it’s not like we’re hippes and we run around naked, but if they happened to be in their room changing or something or someone comes out of the shower, they’re not like, ‘Oh my God. No. Close the door.’”

She’s comfortable with nudity, all right. She wasn’t also shy when she appeared in a risqué shot with her then-husband Seal on his music video for “Secret” in 2010.

Heidi and the British crooner, with whom she has been married from 2005 until she announced their separation and filed for divorce in 2012, are seen nude together in bed for the ballad’s video shot in black and white.

Only the careful placement of sheets and their tangled limbs cover their modesty, but even those were not sufficient to fully hide both her and Seal’s natural assets.

See the NSFW video here:

And who could forget this sexy and funny shot? Even with the comfort of a glamorous KaufmanFranco gown, Heidi’s sexiness still oozed out at the Toys ‘R’ Us Children’s Gala in May.

She went commando and gave the audience a glimpse of her backside through the thigh-high slit of the dress when she stumbled on stage. She posted the photo herself on Twitter, proving that she can be sexy and laugh at herself at the same time.

Going commando and tripping on stage

“(No comment),” she wrote.