We've already tested your knowledge on celebrity bikini bodies, tattoos, engagement rings and even their mothers — and now we want to see how much you know about their brothers and sisters! Whether it's a stroll down the red carpet with their brother or a meal out with their sister, we love to see some good old-fashioned sibling bonding. Take our quiz to find out if you can match the celebrity and their brother or sister!
Question 1 of 10
Guess who posed at a premiere with her half-brother?
Wed, 05/14/2008 - 3:30pm by Molly
Joshua Jackson was without his most fashionable accessory (Diane, of course) out solo in NYC last night. He was dressed for Summer with his straw hat and flip-flops, but not sure about the murse. I have to let him slide, though, since he's been looking so good lately, both on the red carpet and when he keeps things casual. Despite being apart from his lovely girlfriend, Joshua looked pretty happy — as he should be, since Fox picked up his new J.J. Abrams-written TV show, Fringe. Can't wait to hear more about it from Buzz tomorrow after the network's upfronts.

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Despite the kissy photo evidence that these two are more than friends, Rihanna and Chris Brown kept their distance last night — at least while the photographers were around — as they celebrated his 19th birthday at Rebel in NYC. No matter, though, because they had their hands more than full with all of their pals at the bash. Rihanna partied with singer Lil Mama, while Chris held court with his many admirers. Looks like these two had a blast, but hopefully they found some alone time to celebrate when the cameras stopped watching.

To see more of Chris and Rihanna partying it up just read more
Wed, 05/14/2008 - 2:30pm by Molly
Rachel Bilson showed off a pretty Summer braid strutting her stuff into Greenblatt's Deli in LA yesterday afternoon. I think her hair looks great, but Bella wants to know what you think — love or hate it. She had a moment of b*tchface before it was back to her usual smiles. Being around home Rachel probably enjoyed a nice Mother's Day weekend with both her mom and her baby Thurman Murman but by Monday it was back to solo time for R-Bils and her usually nonstop adorable fashion sense.

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Madonna stuck with her favorite all black outfit, devices in hand on her way to the gym, but today is not just like any other day. The charitable pop star announced plans to build a multi-million-dollar girls' school in Malawi this year. Plus, David's adoption is being finalized tomorrow. Amidst all of this, Madonna took time out to chat about being a working mom and again in defense of Britney Spears. Here are some highlights:

- On Britney: "I think a lot of it has to do with the fact that she was never allowed to have a childhood. She didn't get to grow up and make mistakes privately and try things out and just be a kid and be innocent. She's been watched, judged and been under a microscope since she's been a teenager. It's hard to evolve that way."
- On her kids giving her a hard time for working so much: "'When are you coming home?' 'Why are you always working?' 'Why can't you just be like a normal mom?' I just remind them about all the things that they have, and that if I didn't do what I did they wouldn’t have those things."
- On her kids' thoughts on her fame: "They come to the rehearsals. But they're sort of over it. They like to skateboard around."
We think Madonna hit the nail on the head when it comes to Britney and despite being one of the biggest stars ever still keeps things down to earth with her family.
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