Britney Spears turned the ripe old age of 26 this weekend, and the pop star did it with as much attention as she could possibly muster up. In a teeny-tiny black slip dress, Britney partied it up like the star she is. Photo agency X17 (Brit's peeps) caught all of the events of the momentous evening on film. Britney started off the night at the Scandinavian Style Party, hosted by Sharon Stone, attached at the hip to cousin Alli Simms and fellow cohort Sam Lufti. "[Britney] looked like she was in a very good mood, very excited!" says X17's source. That's where Brit met up with her old pal Paris Hilton. The girls partied at the style fiesta, where Brit picked up her first birthday gift -- a fur coat worth thousands of dollars, given to her by a Scandinavian vendor. "Brit loved it and wore it all night," the spy said. Then it was cake time -- as a chocolate creation with raspberries arrived. Brit blew out the candles and hopefully made some kind of worthwhile wish. Then it was off the Four Seasons, where Brit continued to party with Paris, Alli, Sam and the crew in the penthouse. I hope Britney enjoyed herself because there will, no doubt, be at least 50 disasters in her life in the coming week. At least.