They have been locked down together at their family home in Essex.
Yet Demi and Frankie Sims headed to their local park on Tuesday as they enjoyed a gruelling al fresco workout session.
The TOWIE stars seemed in good spirits as they made the most of the open space and performed a series of lunges, squats and stretches on the lawn.
Sister act: Demi and Frankie Sims headed to their local park on Tuesday as they enjoyed a gruelling al fresco workout session
Demi, 22, highlighted her fit figure in all-black workout gear, donning a fitted Nike top and joggers.
Frankie, 25, also looked toned in a pair of ombre blue leggings, layering up in a neon vest and black hoodie.
Keeping up the Essex glamour, the Sims sisters wore their glossy golden locks loose and perfectly styled for their workout.
Getting out and about: The TOWIE stars seemed in good spirits as they made the most of the open space and performed a series of lunges, squats and stretches on the lawn
The pair have been isolating at their family home in Brentwood, along with Frankie’s boyfriend, Harry Lee.
Frankie sensationally dumped her on/off beau Harry on the last season of TOWIE after it came to light that he hadn’t been entirely honest about his flirtation with her close friend Ella Rae Wise.
But by the end of the series the couple were back together, after the club promoter grovelled his way back into Frankie’s arms by spending a Halloween party lying in a coffin.
Family first: The sisters have been locked down together at their family home in Essex
Low-key look: Demi, 22, highlighted her fit figure in all-black workout gear, donning a fitted Nike top and joggers
Keeping it casual: Frankie, 25, also looked toned in a pair of ombre blue leggings, layering up in a neon vest and black hoodie
Blonde bombshells: Keeping up the Essex glamour, the Sims sisters wore their glossy golden locks loose and perfectly styled for their workout
The pair had endured a dramatic showdown, where she dumped him after hashing out the details of their row.
Frankie was left furious after Harry’s lies unravelled and it was revealed that he had been flirting with Ella during a trip to Thorpe Park, which he initially denied.
Meanwhile, Demi’s last relationship was with Love Island star Megan Barton Hanson, which ended acrimoniously following their stint on Celebs Go Dating.
Girls on the go: Frankie and Demi ensured they worked out safely by stretching beforehand
Limbering up: The duo kept on moving as they kept warm in the chilly climes of the park
Demi claimed that their fling came to an abrupt end once the cameras stopped rolling, accusing Megan of ‘using’ her.
Prior to dating Megan, Demi caught the eye of TOWIE co-star Sam Mucklow, causing an awkward love triangle with Shelby Tribble.
In March last year, Sam left TOWIE viewers disgusted for calling co-star Shelby a ‘s**g’ in a row about his dalliance with Demi.
Lean on me: The pair performed a doubles workout and used each other to aide their stretches
Steady on: The pair couldn’t control their giggles as they limbered up in the park
On the move: After limbering up it was time for the pair to head out on a jog
At the time, he appeared to have firmly turned his attention to Demi after blowing his chances with Shelby for good, when Sam ended up having a drink thrown in his face for calling the beauty a ‘s**g’.
He had initially faced Shelby’s wrath for trying to crack on with Demi, just one day after he’d slept with her.
Things eventually fizzled out between Demi and Sam – who is now expecting a child with Shelby.
Making moves: The Sims sisters headed home in their white Mercedes-Benz car