She’s turned her passion for staying slim into a business empire, with her own Skinnygirl books and nutritional merchandise.

And Bethenny Frankel was showing off the results of her low-calorie vegan regime in a bright pink bikini as she took a dip in the ocean in Miami on Saturday, before hitting the boardwalk in a cleavage-boosting navy number the following day.

The Real Housewives Of New York City star first highlighted her seriously toned physique during a swimming session alongside her four-year-old daughter Bryn.
Reality star Bethenny Frankel donned a hot pink bikini as she hit the beach in Miami alongside her daughter on Saturday
Bethenny flaunted her muscular arms, flat stomach and toned legs in her two-piece, which boasted cut-out detailing on the top half.

She went make-up free and submerged her brunette locks completely during her swim.

The next day, Bethenny swapped her neon bikini for a nautical inspired look as she enjoyed a low-key stroll in the sunshine, adding a wide-brimmed straw hat to match her navy and white swimwear.

The 44-year-old star – whose Skinnygirl tips famously include ‘taste everything, eat nothing’ – has been working hard in the run-up to making a return for the seven season of The Real Housewives Of New York City.

Bethenny quit the Bravo reality show four years ago in order to get married and have a baby.

She also launched her own talk show, Bethenny – which has since been cancelled – and set up her Skinnygirl business.

Her co-star LuAnn de Lesseps discussed Bethenny’s controversial return during an appearance on Watch What Happens Live last week.

‘It’s like the good old days. You know, you’d be surprised,’ she explained.

‘This season, she gets along with people that you wouldn’t expect her to get along with, and hates people you wouldn’t expect.

‘It’s exciting to watch her work it with all the girls. We talk about a lot of the old days too.’

All smiles: Bethenny looked mighty pleased with herself as she strolled along in her navy number

Giving herself a boost: The tight top made the most of the reality star’s ample clevage