And isn't he adorable!
Today, the BFFs just couldn't get enough of their furry friend and Stephanie even shared some snaps of the little one for us all to see.
She may be rumoured to be romancing her co-star Oliver Proudlock, but earlier Lucy proved there's only one person - or pet - she wants to be kissing.
Ooo Darcy, you lucky thing!
Sharing a photo of Lucy planting a smacker on her kitten, Stephanie said: "Things are getting pretty damn cute over here @imlucywatson & #darcy."
Not wanting to miss out on a little Darcy love of her own, Stephanie managed to grab a selfie with the kitten while he made himself right at home snuggling on the sofa.
Oh, we so want a Darcy too!
Enjoying a chilled afternoon - one of many, we're sure - Stephanie and Lucy have been inseparable lately and it's no surprise as, now Stephanie has officially moved to London, she is just around the corner from her best pal.
To celebrate Stephanie setting up home in Chelsea, the reality stars enjoyed a sun-drenched get away in Turkey before heading back to London and filming for series eight of MIC.
Now she's sticking around, Stephanie has been confirmed as a returning castmember for the upcoming series of Made In Chelsea and she and the rest of the cast will be joined by three new faces - and there's one in particular who is very familliar!
Earlier this week, Lucy revealed her younger sister Tiffany Watson will be joining her and Stephanie on MIC.
As well as Tiffany, two new boys, Lonan O'Herlihy and Will Colebrook, will also be making their debut on the E4 show.
Made In Chelsea returns on Monday 13 October on E4.
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