Project Runway host Heidi Klum celebrated her 40th birthday with an extravagant -- and oddly-dressed -- ceremony.

Klum began her June 1 birthday early in the morning, shuttling her four children out for breakfast still in their pajamas. She was then seen coming out of a Los Angeles Starbucks, walking alongside boyfriend Martin Kristen and holding the arm of her youngest daughter.

The former model later tweeted the girl her family gave her: all four of the children presented her a set of plaster casts of their hands.

"Look what I got from my 4 beautiful children. Thanks everyone for all the wishes, flowers, balloons & gifts," Klum tweeted.

As for the hat party she hosted, Klum wore an oversized black top hat with a tulle veil covering her eyes and a matching sequined jacket. All in attendance, even her sons, showed off their multicolored hats of various shapes and sizes, with turquoise and red bowlers seeming to be trends. Klum again shared her thanks via Twitter, especially to her pal Nancy who organized the event.

"Thank you Nancy for throwing me my 40th birthday party. Love you girls," she wrote.

Klum told Yahoo!'s OMG Insider in April during Los Angeles auditions for America's Got Talent that she would be thrown a hat-themed party for her birthday. She added that there was going to be a bit of competitive spirit in the mix.

"It's kind of a competition who has the best hat, so they have to be, like, wild and crazy," Klum said, "I'm really looking forward to that because I want to win that competition."

The model visited Ellen DeGeneres' television show that same month. After revealing her upcoming birthday plans -- which she stressed was not her own doing -- DeGeneres presented her with a "Super Mom" life preserver hat, complete with netting and plastic seaweed.

Klum told the talk show that she welcomed aging with open arms.

"Forty is the new 30," Klum said. "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."

Check out Yahoo!'s OMG Insider video on Heidi Klum's big 4-0!

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