With Earth Day coming right up tomorrow, Leonardo DiCaprio and Bar Refaeli started celebrating early by tooling around Manhattan on their bikes on Saturday. Maybe they should keep the green party going by throwing a little soiree at Leo's brand new eco-friendly condo in the city? There's a lot of potential Earth Day fun for this beautiful couple. Before all that, however, the duo trekked up to Boston to catch the Celtics win (yay!) their first playoff game against the Atlanta Hawks last night. Hey, at least the Celts' jerseys are just the right color — green.

Pacific Coast News Online and Landov

• A car carrying Sandra Bullock and her husband Jesse James was involved in a head-on collision with a drunken driver on Friday night in Gloucester, Mass., where Sandra has been filming The Proposal. Fortunately, no one was injured. — AP
• Justin Timberlake and John Mayer were among those who were there to help support Cameron Diaz at a memorial service for her late father on Sunday in Seal Beach, CA. — People
• Check out the winners of the 2008 BAFTA Television Awards. — PopSugarUK
• Forbidden Kingdom took the top spot at the weekend box office, followed by Forgetting Sarah Marshall and Prom Night. — BuzzSugar
• Sister, Sister star Tia Mowry married actor Cory Hardrict yesterday in Santa Barbara, CA. —People
• NY Giants quarterback Eli Manning married his longtime girlfriend Abby McGrew on Saturday in Mexico. — NY Daily News
• Incarcerated Pete Doherty has apparently been kicked out of his house after the property's landlord found it in a deteriorating state. — The Sun

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Two celebrations were clearly not enough, so Victoria Beckham rounded up all her celebrity friends for a party at Via Veneto in Santa Monica last night. We already got a look at the hot couple on their way in — but check out the rest of the guest list. First of all, there have rumors about a falling out between the Beckhams and the Cruises, but Tom and Katie were all smiles and sunglasses on their way in last night. Posh and David's new BFFs, the Beckinsale-Wisemans, of course made an appearance along with Eva Longoria, Will and Jada, Usher and Tamika, Diddy and Kim, Gwen and Gavin . . . the list goes on. Quite the group (out on a school night! Ha) to celebrate the British birthday girl — hope they all had a blast!

To see more from the party including Diddy, Usher, Will, Jada, Gwen, Gavin, and others just read more

Britney Spears looked cute in her basic jeans and t-shirt running errands in LA over the weekend. It seems like there are a ton of potential projects in the works for the pop star, but this weekend we learned some especially exciting news: Brit is going to appear on another episode of How I Met Your Mother! Both the network execs and Britney were excited about the chance to work together again, which is no surprise since her first appearance was a big hit for her fans and was great for the show's ratings. We couldn't be more psyched about this latest bit of good news for her, but will you tune in to see Miss Brit try her comedic skills again?

Flynet

It was quite the Saturday around LA for the Rossdale-Stefani family. Not only did Kingston get to go to a movie with his parents, but he followed it up with a trip to the Disney store and then the park. Aside from the usual fun times on the slide, the little man valiantly vanquished a traffic cone and perfected his soccer skills. Phew. The trio seems to be getting in a lot of great family time before the new one joins the party. We're all excited to see another little Gwen or little Gavin, but it'll always be equally fantastic to see Kingston as a big brother.

To see more of Gwen, Gavin and Kingston just read more