Jessica Simpson spotted leaving the gym in her effort to shift post-pregnancy pounds

Jessica Simpson was spotted leaving the gym again yesterday and her sessions are clearly paying off.

As she approached her car, Jessica Simpson, 31, showed off her entire body for the first time since giving birth last month and she definitely looked slimmer.

The singer has quietly been working up a sweat, sticking religiously to her workout regime in a bid to shift her post-pregnancy pounds.

Wearing an all black gym outfit that consisted of leggings, a tracksuit top and trainers, she seemed eager to get into her waiting car and head home to her child.

It’s not the first time that Jessica Simpson has been seen leaving a private gym in Los Angeles as earlier this week she was spotted finishing another workout.

Jessica Simpson gave birth to her first child with her fiancé, former NFL star Eric Johnson, on May 1.

Jessica Simpson showed off her entire body for the first time since giving birth last month and she definitely looked slimmer

Beaming after the birth of the couple’s daughter, Maxwell Drew, Jessica Simpson looked radiant in the passenger seat of a Range Rover as a female friend took the wheel.

She paired black stretch workout wear with a leopard scarf, her wavy blonde locks falling around her shoulders.

Jessica Simpson was spotted publicly for the first time since giving birth last Wednesday as she arrived to Harley Pasternak’s gym in West Hollywood, where she has been undergoing her workout sessions.

The singer was also seen arriving to the fitness centre on Friday.

It was announced last week that Jessica Simpson, who reportedly gained 80 lbs while pregnant, would front the latest Weight Watchers campaign.

However, the singer was unable to start working out for several weeks on doctor’s orders due to having a C-section.

Appearing to have been given the all-clear, Jessica Simpson is now combining a new exercise regime with a healthy eating plan she had already kicked off.

Jessica Simpson spoke to People, in which she appeared in a photoshoot with daughter Maxwell and Eric, revealing she is eating protein-packed means and drinking home-mixed juices to help shed pounds.

Her dietary restrictions come after she was forced to deny on several occasions that she was having twins because of the size of her baby bump, which appeared to grow larger than average.

However, Jessica Simpson said in March doctors put her blooming figure down to the fact that she had excess amniotic fluid.

Now, the singer says she is anxious to shed her baby weight.

Jessica Simpson told People: “After you have your baby it’s like, <<Oh my God, what happened to my body… this is not me>>.”

The singer also revealed she planned to join Weight Watchers before she learned she was pregnant, having dealt with years of yo-yo dieting.

Jessica Simpson said she simply wants to feel comfortable in her skin again.