Photo: Beyonce stepped out with completely unbuttoned shirt

Beyoncé went out on lunch with Jay Z at Gracias Madre  a vegan Mexican restaurant in West Hollywood, Calif. on Tuesday, where her denim-on-denim outfit definitely turned plenty of heads. The 33-year-old "Single Ladies" singer
strikingly, left the sexy denin shirt completely unbuttoned which revealed her toned stomach on the photo above!!