Heidi Klum is being thrown a hat party for her 40th birthday.

The supermodel celebrates the milestone today (01.06.13) and revealed she is ''excited'' for a night with her ''girlfriends'' - all wearing ''crazy'' headwear.

She told Ellen DeGeneres: ''I'm excited. My friend is actually throwing a party for me and it's going to be a hat party.

''I can't wait! We'll be having burgers, ice cream, fries, chocolate. All the usual stuff.

''Everyone has to show up in hat. So it's all girlfriends of mine and everyone has to wear a crazy hat. So we're all going to sit around with some hats on, which I think is fun.''

Heidi also admitted she isn't concerned with getting older, choosing to embrace the fact she's ''still here'' enjoying life.

She added: ''40 is the new 30. I don't really care about aging. I'm happy. When I get one year older it means we're still here, having a good time.''

The 'Germany's Next Top Model' host kicked off her birthday celebrations earlier in the week when the show's hopefuls presented her with a chocolate cake.