Heidi Klum goes topless while boating with husband Tom Kaulitz

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She loves her ol’ ball and chain.

Heidi Klum posed for a topless photo wearing just a body chain and bikini bottoms in a gushy Instagram post about her husband Tom Kaulitz on Thursday.

“You put the biggest smile on my face Tom 😁❤️,” the 48-year-old model captioned the risqué photo.

Klum used her arms to cover her chest as she clung to the boat’s ladder leading into the clear blue water. She finished off her minimal look with a flat-brim Rolling Stones hat.

The comments section was turned off on Klum’s post.

Earlier this week, the model posted bikini photos while hanging on the luxury boat with her man in Corsica. Klum has also posted photos this week from Italy.

And the former Victoria’s Secret Angel is no stranger to showing off her fit figure.

Earlier this month, she showed off her tan by sunbathing in the nude. She also showed off some under-boob while wearing a dangerously short crop top in June.

While she loves to flaunt her body, she also clearly likes to show plenty of PDA with her man.

In May, she and her musician husband were seen looking extra snuggly as they enjoyed a romantic boat ride on a houseboat on Lake Wannsee in Berlin, Germany.

She and Kaulitz, 31, made their red carpet debut as a couple in May 2018. They announced their engagement on Christmas Eve in 2018. The pair secretly got married in February 2019.

Klum was previously married to Seal, with whom she shares three children, from 2005 to 2014 and Ric Pipino from 1997 to 2002. She also shares 17-year-old daughter Leni with ex-partner Flavio Briatore, though Seal adopted her in 2009.