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Nicole Richie jokes she only appeared in Zac Efron's new Funny or Die spoof because Kate Winslet couldn't make it.

Watch the Funny or Die spoof.

"Hey guys, check out this Funny or Die video with Zac Efron. It's hysterical! They were able to get some really great cameos...Vanessa Hudgens, Queen Latifah, and since Kate Winslet was busy, they called me ;)," the pregnant star blogs.

See adorable photos of Nicole and baby Harlow.

Richie also gushes about Efron.

"On a serious note, I had a fun time. It was my first time meeting Zac and he is every bit the gentlemen, far beyond his years," she says.

Check out photos of stars being goofy.

In the video, released today, Efron's white trash Uncle Hank (Tom Lennon) crashes his pool party, and mingles with guests like Vanessa Hudgens, Justin Long and Lance Bass.

Richie and beau Joel Madden are in the middle of talking about getting married when Uncle Hank interrupts them with a "money-making scheme...scratch and sniff tattoos!"

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