In her second single from her new album, Beyonce Sasha Fierce is once again wearing more Gareth Pugh. Britian is the birthplace of fierce and edgy so Beyonce choosing Gareth for her Sasha Fierce persona is a good match.

 I am not sure who did the fringed glasses yet, maybe its Lorraine Schwartz who designed the metal glove she wore in her "Single Ladies" video. 

Below is her 'Diva' video where you can see Beyonce wearing Gareth Pugh and fringed shades/ car wash shades.