In fact, 20-year-old Bella has revealed that Gigi, 21, is her BFF and mentor.
"Gigi is my best friend and I love her to death... She's been through everything I'm going through now because she's been in the business longer.”
"If I'm sad I'll call her and she always makes me happy again. She's the best, I love her."
And while the baben’ pair have been known for their starkly different styles, B revealed that, like most sisters, she and Gigi are constantly raiding each other’s wardrobes without permission.
"When we were 13, she wore lots of colour and was like Malibu girl. But I always wore dark colours and leather. Both our styles are evolving more now. I go to her house now and she has all my stuff, we always end up sharing things,” she said, adding, "We share shoes, literally everything. I don't even remember giving it to her and she will completely deny everything until the death of her."
Sounds like these celeb siblings are just like us!