Featured on the latter's Instagram, the 24-year-old has been peppering her account with old gems of the pair together, including one from Halloween where they'd dressed up as a witch and Dracula.
Knowing these two jokers, they'd probably prefer a trick over a treat.
One of Sophie's followers offered a sweet reply, commenting: "Your bond is just so amazing to see, I love you both. You make me laugh so much, never lose that."
"Not changed then?" joked somebody else.
Meanwhile, there's another quality dress-up snap of the duo, where Pete's in a green tunic complete with mini sword, while his younger sister stands next to him as a pink fairy. Quite possibly the cutest Peter Pan and Tinkerbell – and Sophie took to the comments to say the incredible costumes were actually made by their nan!
"Old pictures are the best," wrote one of her followers, followed up by another who shared: "That's so cute I love you both on Gogglebox, you never cease to make me LOL."
Saving the best until last, Sophie and Pete's love for the Spice Girls is unquestionable here.
Complete with afro wig and Union Jack dress, the siblings can be seen in fancy dress as band members Scary Spice (Mel B) and Ginger Spice (Geri Halliwell).
"Spicin' up our lives" she captioned it. Indeed they are!
Gogglebox airs on Channel 4 tonight (May 29) at 9pm.
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