From Upscale Hype:

Singer Beyonce Knowles was seen out and about in a distressed Wild Fox “Let Me Eat Cake” T-Shirt (approx. $103), toting a Givenchy Lacquer Nightingale Bag ($716, price varies w/size) and rocking a pair of Christian Louboutin Meree Lace-up Booties ($1,095). Beyonce loves Wild Fox and Louboutin, and I wouldn’t be surprised to see her endorse either brand.