The 27-year-old confessed to her 289,000+ Instagram followers that her ‘flat tummy’ was due to a 3-day tummy bug.
While she posed in the bathroom she posted the picture alongside the caption: “The benefits of having a stomach bug for 3 days .... Flat tummy!!”
The mum-of-one received a mixture of comments on her picture, some wishing her well from the tummy bug, others commenting on her needing to breathe out, while others labelled her a 'hypocrite'.
One user wrote: “It seems so too faced and self righteous, but that's what happens when uneducated and un streetwise people are in the limelight.”
“You are pulling your belly in.... I can have a flat belly Like that too,” commented another. While others said: “Sure u didnt need to show your underboob,” and “exactly can see her bony ribs! Who is she fooling? She just wants attention!”
Also more details emerged about who The Apprentice star’s new fiancé is. According to The Mirror, Luisa’s husband-to-be is businessman Andrew Collins.
The 44-year-old is reported to be worth £36 million and is Ireland’s 231st richest man.
Mr Collins made his fortune by setting up insurance company RSA before selling it- alongside his business partner- for a reported £64 million in 2010.
The millionaire (and future Mr Luisa Zissman) is allegedly very generous with his millions, contributing large sums of money to charity Outreach Moldova.
Let us know your thoughts on Luisa's 'tummy selfie' via the comment boxes below.