"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.
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.
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!"