Jennifer Lopez's birthday was smooth sailing.

The "Booty" singer continued to celebrate turning 46 (yes, 46!!) over the weekend by way of a boat ride with her "squad" on Sunday, and she happily shared a few sweet snaps of the amazing time in the Hamptons.

In one shot, Lopez can be seen striking a pose with her gal-pals.

WATCH: See J.Lo's Sheer Birthday Look

And another pic shows that British singer Natasha Bedingfield also came along for the ride.

But it wasn't just a girls trip, as rapper Fat Joe joined the ladies for some fun in the sun too.

J. Lo's actual birthday was on Friday, and on Saturday, she went out to 1OAK in Southhampton, New York with her on and off-again boyfriend, Casper Smart.

PICS: Jennifer Lopez & Casper Smart Hold Hands on Set of Her New Show

She definitely brought sexy back in a skintight number with a low neckline, cut-outs and sheer panels that made us all question not only the little black dress but how it’s possible that she's really 46.

PICS: 17 Times J.Lo Defied Her Age

Check out the video below to see how she looked smokin' hot in the Hamptons!

Related Gallery

51 Pics That Prove Jennifer Lopez Doesn't Age