Watch: Jennifer Lopez rocks ‘GMA’ concert series...

Fierce J.Lo is back! The songstress took over 'Good Morning America' Summer Concert Series earlier today. Over at Rumsey Playfield in Central Park, she graced the stage to perform old hits and new cuts off her latest album 'A.K.A.'
She spread out a heavily choreographed set which included new single 'First Love', 'On The Floor' and a bootylicious performance of her Diplo-produced banger 'Booty.' What other 44-year-old can rock the stage like that and still look hot doing so? Not many, I'd say. Check out J.Lo shaking that famous rump below.