Show bosses have signed up the 53-year-old Hoppen, who was awarded an MBE in 2009, and is responsible for running her own international interior design firm as well as a design school.
She recently fronted a Channel 5 series and has written a number of books.
Producers are yet to announce a further Dragon after Theo Paphitis also left the show to focus on his growing businesses, however it looks unlikely that the previous favourite, underwear and beauty supremo Michelle Mone will be the one to complete the line-up.
Hoppen said: ‘I have always been passionate about championing entrepreneurs, so being able to take it to the next level by investing my money in innovative new businesses is very exciting.
Executive producer of Dragons’ Den, Ceri Aston, said: ‘Kelly is an exciting addition to the Dragons’ Den line-up.
