Showing off her Skinnygirl credentials: Bethenny Frankel displays toned frame and washboard stomach in two different bikinis 

By Kate Thomas for MailOnline

Published: 10:50 EST, 8 February 2015 | Updated: 13:27 EST, 8 February 2015

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.

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Taking a dip: Reality star Bethenny Frankel donned a hot pink bikini as she hit the beach in Miami alongside her daughter on Saturday

Taking a dip: Reality star Bethenny Frankel donned a hot pink bikini as she hit the beach in Miami alongside her daughter on Saturday

Nautical but nice: The reality star then changed into a navy, cleavage-boosting two-piece for a walk along the boardwalk on Sunday 

Nautical but nice: The reality star then changed into a navy, cleavage-boosting two-piece for a walk along the boardwalk on Sunday 

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.

Toned frame: The 44-year-old star has clearly been visiting the gym in the run-up to her return to The Real Housewives Of New York City franchise

Toned frame: The 44-year-old star has clearly been visiting the gym in the run-up to her return to The Real Housewives Of New York City franchise

Bring on the heat in a hot pink bikini like Bethenny

What better way to get girly by the sea than in a hot pink bikini? Bethenny Frankel has been flaunting her enviable, skinny-girl frame frequently as of late and it's enough to make us green with envy.

While we're not exactly about to abide by her, 'taste everything, eat nothing' motto, we'll certainly steal her style in a bright pink bikini of our own!

Kate Spade New York's structured version has a vintage feel with its wide straps and paneled, longline construction. Underwires and molded cups provide a flattering, subtle lift.

Topshop's basic plunge bikini has a strappy centre and string ties complete with cute gold heart tag trims.

Our absolute favorite is a collaboration between Mónica and Penélope Cruz with L'Agent by Agent Provocateur. It has a similar neckline to Bethenny's and we adore the fuchsia hue. You're sure to be the hottest thing on the beach if you simply think pink!

* PRICES MAY NOT BE AS ADVERTISED
Growing fitness empire: Bethenny has created her own Skinnygirl range, which includes diet and lifestyle books, food and drinks

Growing fitness empire: Bethenny has created her own Skinnygirl range, which includes diet and lifestyle books, food and drinks

Baywatch moment: The reality star was showing off her flat stomach and seriously muscular arms

Baywatch moment: The reality star was showing off her flat stomach and seriously muscular arms

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. 

Making a run for it: Bethenny raced up the beach to get dried off after braving the ocean
Making a run for it: Bethenny raced up the beach to get dried off after braving the ocean

Making a run for it: Bethenny raced up the beach to get dried off after braving the ocean 

Making a comeback: The star is set to return to the Bravo franchise after a four-year absence 

Making a comeback: The star is set to return to the Bravo franchise after a four-year absence 

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

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

Fashion faux pas: The label was sticking out the back of Bethenny's bikini
Fashion faux pas: The label was sticking out the back of Bethenny's bikini

Fashion faux pas: The label was sticking out the back of Bethenny's bikini

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

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


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