Gwen Stefani took the boys to Knott's Berry Farm Saturday for some merry-go-round'ing and roller coaster riding.

Zuma, 3, and Kingston, almost 6, enjoyed the carousel, the bumper cars and a wagon ride, while mom Gwen was a trooper through it all!

Kim Kardashian tends to date professional athletes but is she now looking to get a bit sporty herself?

The reality star is known more for her ability to balance a Hermes bag on one arm and five shopping bags on the other, than she is for her backhand, but it seems the pretty lady is taking up tennis!

We caught Kim in Calabasas yesterday, buying a tennis racket and, no doubt, some cute tennis skirts (probably from Stella McCartney's line for Adidas), with mom Kris not far behind.

Maybe Kim is looking for LOVE on the court???

Jennifer Lopez was barely recognizable in her grey sweats Saturday as she took daughter Emme to an after-school activity before hitting up her own activity -- sweating it out at the gym with boyfriend Casper Smart!

J Lo even changed into a different sweatsuit half way through the day -- but hey, she's probably got a closet full of them.

The singer didn't look quite as glamorous as she does in her chic American Idol wardrobe ... but hey, she's still Jenny From the Block on the weekends!

Heidi Klum was ready for action Saturday in her Brad Pitt-style jumpsuit!



The supermodel mom picked up son Henry at karate and took him to the park with daughter Lou. Klum braved the slide with Lou and helped her out on the swings.

But we have to ask ... what's with this new mechanic-chic style???

Brad Pitt and George Clooney participated in a table reading of the play 8 last night -- a work that explores the legal battle to overturn Proposition 8, California's ban on gay marriage.

Clooney recently addressed rumors he is gay, in an interview with The Advocate, saying: "My private life is private, and I'm very happy in it. Who does it hurt if someone thinks I'm gay? I'll be long dead and there will still be people who say I was gay. I don't give a s--t. I think it's funny, but the last thing you'll ever see me do is jump up and down, saying, 'These are lies!' That would be unfair and unkind to my good friends in the gay community. I'm not going to let anyone make it seem like being gay is a bad thing."

Pitt has said he and partner Angelina Jolie wouldn't marry until ALL couples have the legal right to wed. Pitt and Clooney were joined by fellow actors martin Sheen, Jamie Lee Curtis, Kevin Bacon, Modern Family's Jesse Tyler Ferguson, Glee's Jane Lynch, Matthew Morrison, and Chris Colfer, and George Takei.

Click through to about the 30-minute mark to see a recording of the table reading at the Wilshire Ebell Theater last night ...

It's an interesting twist on Bravo's Real Housewives series ... Lindsay Lohan plays Rapunzel, with the rest of the cast filling in as other Disney "princesses" -- Belle, Jasmine, Snow White and Cinderella.

Check it out -- Lindsay rocks!

Angelina Jolie took Shiloh, Vivienne and Knox to see The Secret World of Arrietty at Disney's El Capitan theater Saturday in LA.

Daughter Vivienne got all dolled up for the event, putting on mom's red lipstick and a black and white silk dress!

Meanwhile, Shiloh sported her usual t-shirt and pants as she clung to her licorice and popcorn bucket when the group left the theater.

Like mother, like daughter! Well, at least one daughter!

Katy Perry looked was walking art as she arrived to the Viktor & Rolf Fall/Winter 2012 show in Paris Saturday.

Definitely in a blue period, the singer was styled to the nines ... And check out her purse -- it's 500 mg of something!