So much for Sunday being a day of rest!
After jogging, biking and swimming for hours sans makeup, J.Lo got glam for the posh party, held at the Bowery Hotel.
Guests included Leah Remini, Brooke Shields, Dita Von Teese and Kimora Lee Simons.
One no show? Heidi Klum. The Project Runway host was reportedly angry that J.Lo pulled out of judging the season finale last minute.