Fresh from watching her mother get married, the 'Drunk In Love' singer lent her support to the shop launch in glitzy Beverly Hills on Tuesday night (14 April).
Queen Bey dressed in all-white for the event... still in the wedding mood?!
At the weekend, she was among the guests at her mum Tina Knowles' wedding to actor Richard Lawson, which took place on a yacht moored in Newport Beach, California.
Others in attendance included Bey's husband Jay Z, their daughter Blue and her sister Solange.
Tina split from Bey and Solange's dad Matthew in 2009.
Beyonce's new stepsister is actress Bianca Lawson, who is appeared in shows including Saved By The Bell: The New Class, Buffy The Vampire Slayer and Pretty Little Liars.
As well as attending the wedding, Beyonce also found time to stop in at the Coachella music festival in Indio, California at the weekend, arriving in true Bey style on her own private jet!