The sisters and Minnies Boutique owners found fame on TOWIE and are now two of the most recognisable faces to have emerged from the ITVBe show – although Sam, 25, left in 2014.
Both Sam and Billie, 26, are proud mums: Sam has son Paul, born in December, while Billie is mother to gorgeous daughter Nelly, who celebrates her second birthday in July.
As they both became famous on a reality show, perhaps it's no surprise they've been approached to star in their own spinoff series with the kids.
"There's always been interest in that!" Sam said.
Whatever happens, however, the kids come first, as both Sam and Billie told us they're very selective about what work they take on now as they don't want to be away from their children.
And as for more kids… well, it could happen!
"Billie will be next to have another baby," said Sam, "and then I'll be next again, and it will keep going like that. Our mum's going to have about six grandchildren in the space of four years!"
Billie said: "I definitely want to have another one soon. I don't want to leave it too much longer. You never know, we could be pregnant at the same time! I said I wanted another one straight after Nelly, but it's so nice to have that time with your first. Now I feel I don't know what I'd do without her, and as much as I want another one, it's been so lovely with just me and her. She's like my best friend."
Sam added: "Me and [boyfriend] Paul both want a big family. I would like one straight away but I think we'll give it a bit of a break just so I can enjoy my first."
We'll see Sam in the upcoming ITVBe series The Mummy Diaries, following her first year with baby Paul, while Billie has said she's "committed" to TOWIE for the foreseeable future.
We spoke to the girls about Sam's new collaboration with Carmen Products.