Wearing a two-piece black bikini from the new line, the 20-year-old posed for photos in a hot tub with two models hand-picked by the star to represent 'real women'.
Kari Boanas and Jess Banks beat thousands of hopefuls for the opportunity to pose with Mecklenburgh.
The Daily Mail reports that the range will feature traditional bikinis alongside bedazzled versions of the monokini.
Bella Bamba spokespeople Eleise Lucraft and Becky Majeed, said of the reality star: "Lucy was the perfect choice to collaborate with.
"She knows her fashion, is a beautiful girl who embraces her curves, and loves to look good."
The complete range can now be purchased at Bellabamba.co.uk.
Watch Lucy Mecklenburgh in an excerpt from The Only Way Is Essex below: