Credit: Fame Pictures

Four kids and still not afraid to flaunt it!

Former Victoria's Secret model Heidi Klum wasn't too shy to go topless on a recent trip to the beach. The 38-year-old supermodel and host of Project Runway was caught sporting just her bikini bottoms on a recent family trip in Porto Cervo, Sardinia on Sunday.

Klum is currently vacationing with her husband, British singer Seal, and their children Leni, 7, Henry, 5, Johan, 4, and Lou, 22 months, on the Italian island. And even after giving birth to four children, Klum, who hung up her Victoria's Secret angel wings last year, is still maintaining her supermodel frame. See more pics from Klum's vacation.

"It's a huge responsibility to have four kids," she recently told Us Weekly. "They all have different likes and dislikes and activities that they want to do. You have to learn how to juggle all of that, and at the same time, give them each the love that they need."

The German beauty has been married to Seal, 48, since 2005. The pair have four children together. Leni's biological father is businessman Flavio Briatore, but Seal has acted as her sole father figure since her birth and officially adopted her in 2009.