According to The Sun, the singer rented a private jet to fly Federline and 15 of his friends to Las Vegas to celebrate his 28th birthday. Staying at the Venetian Hotel, at a cost of $8,000 per night, the birthday party cost the singer over $!00,000.
During the festivities, the 24 year-old singer performed a solo of "Happy Birthday" to her husband, with a champagne toast.