Britney Spears had a whole lot more than her 27th birthday to celebrate on Dec. 2! The pop star's comeback was in full force on Dec. 2 with a circus theme to commemorate her album Circus, also released that day. New York nightclub Tenjune was transformed into a full-fledged three-ring circus for Brit's birthday bash, which was attended by her mom Lynne as well as celebs like Jeremy Piven, Lance Bass and Ciara. Wearing a low-cut Roberto Cavalli cocktail number and a loose up-do, Spears and the rest of the guests feasted their eyes on jugglers and men on stilts and their taste buds on carnival confections like popcorn and hot dogs. Toward the end of the night CEO and president of Spears' Jive Records label Barry Weiss presented the comeback queen a circus-themed birthday cake and told her, “We are so proud and so happy to be a part of your life. Looking at your two boys today, it's an amazing experience.”



Britney Spears will hit the road for her first arena tour in five years next spring in support of Circus. The Pussycat Dolls will support Spears on the “Circus Starring Britney Spears” tour, which kicks off March 3 in New Orleans and concludes April 28 in Chicago. After playing in her home state of Louisiana, Spears will weave her way throughout the nation with stops in Atlanta, Miami, Tampa, Uniondale, N.J. and Boston before heading to Toronto and Montreal. The pop star then will perform for fans in our nation's capitol before traveling to Uncasville, Conn., Pittsburgh, Houston, Dallas, Kansas City, Mo., Minneapolis, Edmonton, Vancouver and Tacoma. Spears will make stops in California, playing in Sacramento and San Jose and then she will take the stage in Salt Lake City before returning for shows in Los Angeles, Anaheim and Glendale. After a stop in Sin City, Spears will cap off her “Circus Starring Britney Spears” tour in Chicago. Spears is slated to start rehearsals for her upcoming tour, which will be hosted by AEG Live, with longtime choreographer Wade Robson next month. AEG Live CEO Randy Phillips told http://Billboard.com that the company has already sold over 100,000 tickets without even running an ad, so check out http://www.stubhub.com/britney-spears-tickets for Britney Spears tickets to see her live before they are all gone!

The first single from Circus, “Womanizer,” recently set a record for the biggest jump to No. 1 on the Billboard Hot 100 after it leaped from 96-1. The single's popularity comes on the heels of her sweep at the 208 VMAs, in which she took home Moonmen for Best Pop Video, Video of the Year and Best Female Video. Circus is the follow-up to 2007's Blackout, and if early sale estimates ring true, Spears' most recent effort will outsell her last. Britney has also made several television commercials around the time of her album release date, with a performance on Good Morning America and a documentary on MTV titled “Britney: For the Record.” The pop star's tour is sure to be a success with or without the inevitable media frenzy, as her fans remain as loyal as ever, so get your Britney Spears tickets soon!