The reality star wowed in a floor-length black gown at the Caudwell Childrens Butterfly Ball held at the Grosvenor House Hotel in London on Thursday night (15 May).
Gemma's choice of outfit, which featured a lace trim neckline, accentuated her curves. Gemma teamed her look with a small clutch bag and peep toe heels.
There's no better way of advertising than self promotion either, as Gemma told fans on Twitter that the dress will be part of her forthcoming Gemma Collins' Clothing Collection, which caters for plus sizes. Exciting!
Once inside, Gemma caught up with her co-stars Charlie Sims and Ferne McCann, as well as former TOWIE star and close friend Amy Childs.
Gemma got ready for the night by popping into Chloe Sims' recently opened beauty bar, to get her hair styled for the occasion.
The fashion designer seemed to be pretty impressed with her luscious curls too: "@ChloesBeautyBar OMG I LOVE IT IN HERE I love getting my hair done here," she had earlier tweeted.
Gemma will soon be heading to Marbella to film a special episode for the new series of TOWIE. We can't to see her back on our screens!
What do you think of Gemma's outfit? Tell us below, as the best comment from across the website each week wins £50!
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