Brit Awards on Tuesday night. The musician, 36, - who announced just last week that she is expecting her third child - looked incredible in the full-length number as she arrived at the event at the O2 in London.
Jessie exuded glamour in the flattering dress that skimmed over her growing bump which she wore under a sheer black cape tied around her neck.
The star completed her red carpet look with a pair of long black leather gloves and a black clutch bag as she posed for the cameras.
She wore her brunette tresses in loose waves over her shoulders and opted for a full face of makeup including a slick of light pink lip and blue eyeliner.
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