Beyoncé joins Jay Z on stage at 3rd Annual Global Citizen Festival...

Beyoncé brings back her 'B'Day' era style wig, while gatecrashing her husband's headlining set.

During last night's Global Citizen Festival in New York City, Beyoncé and Jay Z gave fans a taste of their just concluded 'On The Run' tour.

The power couple ended the night with 'Holy Grail' and 'Forever Young.'

Their chemistry was simply undeniable, and Bey looked like she was going to pop out and have a Janet moment. Fortunately, she was rocking a nude bra so all was well in the end and she looked super gorgeous. 

I rock with this look from head to toe. The concert was a free show for volunteers who took action against world poverty. The goal of the Global Citizen Poverty Project is to end extreme poverty by 2030.