Sexy Simpson! Jessica Simpson looked smoking hot on the red carpet in New York City on Tuesday, Dec. 3. The 33-year-old mother of two showed major cleavage in a form-fitting red dress to attend the 27th annual Footwear News Achievement Awards at the IAC building.

PHOTOS: Jessica Simpson's body evolution

Simpson flaunted her slim post-baby body for photographers just fives months after welcoming her second child, son Ace. The former Fashion Star mentor look glam in the knee-length, red-and-black floral print Carolina Herrera dress, which showed off her narrow waist. She accessorized the look with black Casadei pumps, Lorraine Schwartz jewelry and a black Giorgio Armani coat. Simpson also wore her long blonde hair down and styled smokey eye makeup. 

PHOTOS: Jessica Simpson's family album

The Texas native was joined at the event by fiance Eric Johnson. An onlooker tells Us Weekly that the 34-year-old former NFL player patiently waited on a nearby couch while Simpson posed for pictures. 

PHOTOS: Jessica Simpson's second pregnancy

The couple and their two kids -- Maxwell, 19 months, and Ace, 5 months -- celebrated Thanksgiving together in Boston with Johnson's family. "Eric is such an amazing dad. She completely trusts him and has all the confidence in the world with him as a dad," a source told Us Weekly. "She loves Eric's family and is really excited to bring both kids back east and spend Thanksgiving with them."

Tell Us: What do you think of Simpson's red carpet look?

This article originally appeared on Jessica Simpson Looks Gorgeous, Shows Off Cleavage and Slim Body on Red Carpet in NYC