Diddy Throws Private Birthday Bash for Kim Porter
12/16/2008 AT 04:25 PM EST
Nearly 30 guests, including Grey's Anatomy star Ellen Pompeo and husband Chris Ivery, co-star Sara Ramirez and reality TV's Lisa Gastineau, gathered at Murano Restaurant & Lounge to celebrate Porter's 38th birthday.
Porter – the mother of Diddy's nearly 2-year-old twin girls and 10-year-old son – arrived fashionably late to the restaurant, which was filled festive with red balloons and streamers. The night's soundtrack was a mix of old school 70s R&B prepared by Murano owner Sandy Sachs.
At one point in the evening, a guest tells PEOPLE, "The group serenaded Kim to Stevie Wonder's "Happy Birthday," and then they presented her with a cake."
While Diddy stuck to ginger ale at the party, the other guests sipped on a specialty lemon drop martini made with Ciroc vodka designed for the occasion. A four course tasting menu created by Executive Chef Luciano Sautto was served.
And the group had the whole place to themselves: Although the restaurant is usually closed on Monday, it was open just for the private party, which started at 8:30 p.m. and ended after midnight.
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