Instagram Followers: 622,000
Luisa is by far and away the most popular Apprentice star on Instagram, with her whopping follower count of 622,000 being more than the rest of the top five combined.
After finishing as runner-up on The Apprentice in 2013, Luisa went on to appear in Celebrity Big Brother where she reached fourth place. She continues to make regular guest appearances on This Morning and Good Morning Britain discussing trending news topics.
The Milton Keynes-born businesswoman has also run several successful businesses including an online electronics store, a baking website and a cupcake shop, as well as dabbling in modelling.