Luisa, 25, was pictured in the cerise number outside the swish May Fair Hotel in London before heading inside to meet her pals.
The mum-of-one, who made it to the final of the BBC1 series, kept her long hair loose and teamed her dress, from Pretty Dress Company, with a pair of nude heels.
It also appeared that Luisa had popped to the Hampstead boutique Miriam before heading to the hotel and carried a shopping bag of goodies on her arm.
On her other shoulder, Luisa completed her look with a simple black handbag.
Viewers watched as Luisa was pipped to the post in the Apprentice final by Leah Totton last week, but she has been on the go ever since.
Not only has the businesswoman secured investment for her brand Bakers Toolkit, Luisa has also been juggling her new career venture with motherhood.
On the weekend, Luisa was pictured arriving at a Hamleys party in London with her three-year-old daughter Dixie.
Check out Luisa's original Apprentice video interview below: