Jennifer Lopez, formal American Idol judge, was in great spirits celebrating her birthday Tuesday aboard in a yacht!

The “Dance Again” singer, who turned 43, looked radiant in a red-orange, backless Tom Ford dress as her beau Casper Smart, 25, literally led her blindfolded on board the New York party boat.

The stunning Latina singer/actress looked ravishing in a form-fitting Tom Ford red dress with the signature gold shoulder to hip zipper detail.

J Lo wore her sexy dress with matching Christian Louboutin ‘Bis Un Bout’ sky-high. You already know her Christian Louboutin Unbout pumps are one of the most popular styles this season.

She finished her look with a pair of classic gold hoops, python panel clutch, and a gold cuff.

Lopez couldn’t hide her delight when a cake in the shape of a giant pink teddy bear was brought out. “Happy birthday BEAR!” it read. (The couple call each other “bear.”)

Earlier in the afternoon, Lopez’s children, Max and Emme, 4, were spotted exploring the yacht with their grandmother, Guadalupe.