11/07/2013 16:46 BST | Updated 22/05/2015 06:12 BST

Heidi Klum Celebrates Her Birthday At Party In LA, Looks Like There Was A Hat Theme

Happy birthday, Heidi Klum! The supermodel turned 40 over the weekend and to celebrate, she held a private party with her family in Bel Air.

heidi klum

It's common knowledge that Klum isn't shy when it comes to fancy dress, so it's no surprise that there was a theme for her birthday bash - a hat theme to be precise.

Obviously, Heidi made sure her headgear was the most eye-catching. She opted for a not-so-subtle tower of trilby hats accessorised with mirrors and a veil. Nice.

Her partner Martin Kristen kept his look low key with a black cowboy hat while her sons chose simple blue and white styles.

heidi klum

Considering that this is the woman who dressed up as Cleopatra last Halloween, her 40th birthday costume was pretty tame.

Here's more of her best looks below: