Dec. 18 isn't only Katie Holmes and Brad Pitt's birthdays; Christina Aguilera celebrated turning 28 in style at Osteria Mozza in LA last night with her husband and friends. She and Jordan go all out for Halloween each year, so it's no surprise that she chose a Clockwork Orange-themed costume bash. Nicole and Joel came out for the event, and it looks like Joel was even able to recycle an old outfit, while Nicole went for a more literal interpretation in orange. Never one to miss a party, Paris Hilton also helped the pop star turn 28. After a big year that included bringing Max into the world, it looks like Christina still knows how to kick back and celebrate herself.

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Ryan Gosling got into the festive — or lumberjack — spirit out to lunch with a friend in LA yesterday. Earlier this week we had a moment of nostalgia for Ryan and Rachel, but the two are working on their separate projects these days. The Canadian actor and budding musician is apparently hard at work recording an album with his band in California and I bet he doesn't get too many opportunities to wear that coat in his current location. Thanks to the unusually yucky week on the West Coast, maybe Ryan feels a little more like he's at home this holiday season.

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Reese Witherspoon and Jake Gyllenhaal were reunited stateside yesterday, heading to pick up Ava in school and sweetly holding hands through the rain. Ever the gentleman, Jake carried some flowers as the trio headed home. Today it will be Jake with all the presents as he celebrates at his 28th birthday party, but it looks like being home with Reese and her family around the holidays is the perfect present. While Jake continues to film Prince of Persia, Reese is gearing up for more projects of her own. The actress has signed on to two new comedic projects in 2009 working with some of Hollywood's finest, Cameron Crowe and James L Brooks.

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Jennifer Aniston and John Mayer had a rare moment of PDA looking positively giddy walking out after dinner at La Esquina in NYC last night. They look so in love and cuddly that we couldn't resist bringing you 40 photos of the couple — check out all the seriously precious moments below. Jennifer had a long day starting at 4:30 on GMA but she looks energetic as ever it's no wonder why John can't get enough of her. Her passion for yoga might keep her in amazing shape, but it seems like the man with the voice she loves so much is enough to keep her relaxed and happy.

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