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Chris Ivery, Ellen Pompeo

Lisa O'Connor/ZUMAPress.com

How are Grey's Anatomy star Ellen Pompeo and her husband, Chris Ivery, going to celebrate their upcoming one-year wedding anniversary?

With a trip to Las Vegas, baby!

The couple, whose anniversary is on Monday, Nov. 10, have plans to stay in a "plush suite" at the Palazzo this weekend, a source tells me.

They'll get their party on Saturday night at Tao restaurant and nightclub, which will be celebrating its third anniversary. Pompeo and Ivery will be joined for some of their celebrating by Pompeo's former Grey's costar star Kate Walsh and her Hollywood executive hubby, Alex Young, the source says.

Pompeo has another big day to toast—she turns 39 on Saturday.

"They wanted to do something special," the source said, "but didn't want to go too far because of Ellen's filming schedule."