Jennifer Lopez's Birthday Dress is Super Sexy & Sheer!

Jennifer Lopez hits the red carpet while attending her birthday celebration at 1OAK Southampton on Saturday (July 25) in Southampton City, N.Y.

The newly 46-year-old actress was joined for the party by her boyfriend Casper Smart, who held her hand as he led the way into the venue.

PHOTOS: Check out the latest pics of Jennifer Lopez

Jennifer is currently on the east coast while filming her upcoming NBC series Shades of Blue in the Big Apple. Her indie film Lila & Eve, also starring Viola Davis, was released in limited theaters and on demand last week. Go check it out now!

FYI: Jennifer is wearing a Bao Tranchi dress, a Jimmy Choo clutch, and Casadei shoes. Guests enjoyed gluten-free Summer cocktails by CÎROC Vodka.