Did they pull it off? Well, Jennifer Hudson sure looks surprised 30th birthday party Monday night at Opera Ultra Lounge. (Jeff Martin )

• Jennifer Hudson celebrating her 30th birthday at Opera Ultra Lounge Monday night. The newly-svelte singer, in town for the Kennedy Center concert honoring Aretha Franklin, thought she was going to a late birthday dinner with friends; instead her sisters and about 300 fans surprised Hudson with a party at the new downtown club. The festivities — with a three-tiered cake, “Happy Birthday” sung by Raheem DeVaughn and Lil’Mo, and Hudson’s hits performed by drag queens — lasted until 2 a.m.