The singer, who has been boasting a slimmer frame over the past few months, looked every inch the yummy mummy as she made her way from her hotel in New York to an awaiting vehicle in the stomach-bearing top, which she teamed with a pair of leather joggers.
Looking effortlessly cool and oozing confidence, the mother-of-two showed off her quirky style while making the most of her shrinking frame in the ensemble.
She teamed the black and pink combo with a pair of bright pink stilettos and a blue handbag, which she threw over her shoulder and matched to her manicure.
Lily Allen, weight loss, crop top, slim, outfit, style, fashion, katie hopkinsThe star made the most out of her svelte figure and opted for a crop top [SPLASH]
And finishing off her look, she added a pair of stylish sunglasses and a statement necklace, which featured a gold pendant at the end of it.
Lily debuted her weight loss via Twitter last month and has been enjoying wearing a number of figure-hugging outfits since.
She posted a snap of her 3-stone weight loss to the social networking account after Katie Hopkins made comments about the weight she gained after giving birth to her daughter.
Motormouth Katie she said that Lily becoming a mum "largely involved gaining two stone and looking pretty hideous" in a recent interview.
However, not one to stand down during an argument, the pop star replied with a snap of her looking incredibly svelte in a black body con dress.
Lily Allen, weight loss, crop top, slim, outfit, style, fashion, katie hopkinsThe star teamed her pink and black combo with a pair of towering stilettos and a blunt bob [SPLASH]
She wrote alongside the picture: "Just going to the shop, want anything Katie?"
Lily accompanied the snap with a host of tweets where she shamed Katie's weight gain comments.
She wrote: "I wasn’t exercising because I didn’t want to take risks, and funnily enough the survival of my children? felt more important than being thin.
Lily debuted her weight loss on Twitter after hitting back at Katie Hopkins' weight jibes [INSTAGRAM]
"After tragically loosing a child so late in my pregnancy I may have gained a few pounds, I am one of the many that find comfort in food."
Lily then deleted the tweets, explaining to fans: "Sorry about that, but my babies are a touchy subject and I gave her exactly what she wanted by responding. I am going to delete it all."