The original Essex star quit the show earlier this year but returns on Wednesday evening's episode (3 August) to offer her support to Bobby Cole Norris, who is still struggling with the death of his beloved dog Beau.
Jess brings her own pup Bella with her to cheer Bobby up.
Bobby had already hinted we'd be seeing Jess on TOWIE again after sharing a photo to social media, in which he said they'd been filming together.
We've missed Jess on our screens ever since she walked away from The Only Way Is Essex in February, after starring in the series since the very first episode, back when she was an original castmember alongside brother Mark Wright, Lauren Goodger, Sam Faiers and Amy Childs.
Announcing her exit, she had said: "Hi everyone, I just want to let you all personally know that after five amazing years on The Only Way Is Essex it is time for me to step away. I've had the best time and I want to say thank you all so much for your support, you will be seeing me soon and I'm also going to be keeping up with all the goss in Essex. Love you all lots."
Since leaving the show, Jessica has been focusing on other aspects of her career, including her Sparkling novel series. The latest in the franchise, Sparkling Stars, is out now.
She's also dreaming of a career Stateside, telling Reveal recently: "I've got an agent and I'm hoping to go to auditions. I've fallen in love with the place. If it works out, I'll be looking for my own apartment... I feel so independent since leaving TOWIE, and being single gives me the freedom to experience new things and see the world."
Bobby, meanwhile, has been grieving the death of dog Beau, who was put to sleep after being attacked by a larger dog during a walk in Essex this summer.
TOWIE continues 10pm on ITVBe.
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