Beyonce's sister, Solange, celebrated her 26th birthday this past weekend in London, as she was there for Hackney Weekend 2012.

Solange tweeted a photo of herself and her older sister leaving a helicopter after Beyonce treated her to a ride in the whirlybird.

Jay-Z also made sure to show some birthday love for his sister-in-law. After his set was done, he, along with Kanye West, Rihanna, and Beyonce sang "Happy Birthday" to Solange and also gave her champagne to go along with her birthday cake.

A source who was present during the celebration stated "It was really sweet. Solange hadn't even noticed that it had turned 12 a.m. when Jay got everybody singing together. She was really touched."

Source: popcrush.com