The Apprentice finalist, 25, was co-hosting the event last night (12 August) and arrived looking glam but smart at London's swish May Fair Hotel.
Luisa showed off her figure in the demure pale pink number, which was cut just below the knee, and she teamed it with a pair of nude Louboutin peep toe heels.
The mum-of-one, who is soon to launch her Bakers Toolkit, carried a simple cream and gold clutch and glitzed up her outfit with a chunky and sparkly gold bracelet.
A little more than a week ago, Luisa had long hair extensions added to her highlighted locks, and she chose to style them in big, sexy curls for the awards ceremony.
Before the event started, Luisa tweeted: "At the British Young Business Awards going through the schedule for tonight!! Exciting!! X"
This would have been Luisa's first attempt at co-hosting such an event but, given the fact she pitched to Lord Alan Sugar and 100 industry experts in the nail-biting final of the BBC1 show, surely it was a doddle!