Gabby Allen flaunted her impressive physique on Instagram on Thursday, just days after announcing her split from Casey O'Gorman. 

The former Love Island star, 33, looked incredible as she showed off her pert bottom in a stylish blue activewear set during a gym workout.

Her ensemble featured a skin-tight halterneck top paired with matching high-waisted leggings, perfectly accentuating her sculpted frame. 

She completed the sporty look with off-white New Balance trainers and white ribbed socks. 

Adding a touch of glam, the fitness coach accessorised with gold earrings and a wristwatch, striking confident poses for the camera. 

Gabby styled her blonde tresses in a messy bun and opted for a natural makeup palette for the workout session. 

She captioned the stunning snaps: 'I promise you, hard work pays off (lock emoji) Decide. Commit. Execute.' 

The post comes just days after MailOnline reported that Gabby and Casey, 28, had split - three months after winning Love Island: All Stars. 

The couple, who won the £50,000 cash prize during the final of the ITV show in February, decided they are better off as friends.

In a joint statement, the couple's reps told MailOnline: 'After much thoughtful consideration, Gabby and Casey have decided to go their separate ways romantically. 

'This decision was mutual, and they both remain on good terms as friends with a shared respect for each other.'

In an add-on statement, Gabby's rep said: 'Gabby is grateful for the memories they've created together and wishes Casey nothing but the best as they both move forward on their individual journeys. She's excited for what the future holds and appreciates.'

The split will come as a surprise to fans as Gabby was seen supporting Casey as he ran the London Marathon earlier this month. 

The Liverpool beauty waited in the crowd to greet Casey, and the pair shared a sweet kiss as she cheered him on.

They were also seen going for dinner together at Lucky Cat restaurant in Mayfair on Saturday night.  

The breakup comes exactly one month after Gabby and Casey enjoyed a trip to Dubai together in their first holiday as a couple.

The pair shared loved-up snaps from the trip where Casey was seen planting a kiss on Gabby's cheek while they enjoyed a romantic dinner.

Since winning the show, they also enjoyed plenty of double dates with last year's All Stars winners Tom Clare and Molly Smith.  

Gabby discussed their relationship on the Agree to Disagree podcast earlier this month, including the moment when Casey asked her to be his girlfriend.

'He actually asked me weeks and weeks ago, we'd been out the villa about a month and I just thought I'm not even going to tell anyone,' she said.

'It's almost funnier that people are still giving me s**t about it! He literally asked me on a dog walk and a nice country pub, and it was so nice there were no frills attached, and it was perfect for what we wanted.

'I get why people want the elaborate stuff, but this really from Case just really made it feel like it was real.'

Meanwhile, Casey appeared on Sophie Habboo and Melissa Tattam's podcast, where he spoke about the pressures of asking her.

Alluding to Ronnie Vint and Luca's proposals he said: 'It was all Ronnie this and that and Luca's done this I just thought f**k all of them - I'll do it my way.

'We didn't feel the need to make a post about it, that's no dig to anyone else that has done it we just didn't want it.'

Gabby and Casey managed to storm to victory during the live Love Island final - pipping longtime frontrunners Luca Bish and Grace Jackson to the post while Ekin-Su Cülcüloğlu and Curtis Pritchard finished in third. 

The couple had flown under the radar in the lead-up to the finale, with bookmakers never placing them as favourites to clinch the £50,000 prize. 

When he first appeared on the show in 2023, Casey was coupled up with Lana Jenkins, Claudia Fogarty and Rosie Seabrook.

Then, when he appeared on the first season of All Stars, he was coupled up with Kaz Kamwi and Eve Gale.

Gabby first appeared on the third series of Love Island in 2017, where she was partnered with Marcel Somerville.

They broke up less than a year after the show, after it was revealed he had cheated on her during a trip to Mexico.