Princess Beatrice visited one of her favorite London spots, the Kensington Roof Gardens, last night to celebrate the space's 30th anniversary alongside her boyfriend, Dave Clark. The London hot spot is owned by Dave's boss Richard Branson, who made two thumbs ups as he left the venue. Richard's kids, Sam and Holly, also stepped out to join the fun. Pippa Middleton recently celebrated Holly Branson's engagement to Fred Andrews, but Kate Middleton's younger sister wasn't able to make yesterday's bash. Princess Beatrice has been busy lately wrapping up a year of studies at Goldsmiths College and attending royal events like the Epsom Derby with Kate Middleton and Prince William. Her mother, Sarah Ferguson, meanwhile, is making the press rounds to promote her upcoming show on Oprah's OWN network. In a recent interview, Sarah revealed that she and her estranged husband, Prince Andrew, actually still live together in the same English home with their daughters, Beatrice and Eugenie. The first episode of her program, Finding Sarah, airs this Sunday.