The couple attended Guards Polo in Windsor on Sunday (11 August) with the rest of the cast as they kicked off another day of filming.
Stephanie and Spencer, who have been dating since earlier this summer, were all smiles as they posed for a photo together.
Stephanie, who starred in US show The Hills, is thought to be making her debut in MIC for the new series this autumn. She tweeted: "My first polo match @SpencerGeorgeM."
Stephanie also posed alongside Spencer and his co-stars Francis Boulle, Victoria Baker-Harber and Phoebe-Lettice Thompson for a group photo. We think the 27-year-old is settling into the cast just perfectly!
But slightly taking the shine off the new couple, was the colourful outfits sported by the boys!
Representing the best of Chelsea, Stevie Johnson got suited in a bright pink blazer with rolled up denim jeans, while Spencer added a splash of colour with a cobalt blue suit and pink shirt, which also coordinated with Stephanie's printed dress.
Meanwhile Alex Mytton, who last week joked that he had rekindled his romance with Spencer's ex Lucy Watson, wore a tropical print jacket!
There was no sight of Lucy but her best mate Binky Felstead made an appearance, and while basking in the sunshine gave us her best attempt at pouting. She tweeted: "At ze polo with a trout pout!"