Jessica Simpson is showing off her gorgeous figure and tiny waist! The 39-year-old shared a sexy photo in an all-black ensemble, captioned “NYC Ladies’ Night ?” on the evening of Wednesday, September 25 — perhaps a nod to her ladies night themed video for 2006’s “A Public Affair.” Jessica rocked a skintight black dress with ruched details that created an on-trend asymmetrical bottom. On her right leg, the skirt portion of the dress rides dangerously high as she revealed her toned legs through a sheer pair of black pantyhose. The super low cut front allowed Jessica to flaunt her cleavage, as a lacy undergarment peeks through. The fitted number also featured ’80s-inspired shoulder pads and long sleeves.The “Sweetest Sin” singer paired the glove-like dress with a platform black suede heel, a black clutch with a tassel, and a fall-ready black black nail as she poses seductively with one hand on her hip. Jessica’s gorgeous blonde locks were perfectly blow dried straight, as she finished her look with a go-to smokey eye and plump nude lip. She didn’t tag a location, but appears to be standing outdoors on a balcony in NYC, as a brick wall can be seen behind her. We were also loving her cocktail ring!Jessica gave birth to her third child, daughter Birdie, only six months ago but revealed dropped a whopping 100 pounds on Twitter September 24. “6 months. 100 pounds down (Yes, I tipped the scales at 240 ) My first trip away from #BIRDIEMAE and emotional for many reasons, but so proud to feel like myself again. Even when it felt impossible, I chose to work harder,” she shared, along with a photo in another fitted black dress. Jessica was vocal about her pregnancy struggles on social media, actively posting updates and sharing photos of her growing belly and intensely swollen feet.