The entrepreneur - who finished second on the BBC reality show, and also owns two bakery businesses - was having a row with one user on the social networking site, who was berating her over the pictures of her and Moshi Monsters boss Michael Acton Smith in the back of a cab.
As the spat escalated with the user calling her out for wearing skimpy outfits and parading around in her bikini, Luisa used her secret weapon - her body - to silence her critic.
Posting the saucy snap, she wrote: "Come to the conclusion @TheEmmaWalker fancies me her constant googling of me half naked proves this so Emma just 4 u.
"Emma news flash darling u can have a really fun crazy personal life AND be good at business it's not a compromise," she also tweeted.
We couldn't agree more. You tell her, Luisa!