United Kingdom, May 6 -- Kate Ferdinand admits managing her children at different ages is "the hardest thing".

The 32-year-old former reality star is stepmother to Lorenz, 18, Tate, 16, and 14-year-old Tia - who her husband Rio Ferdinand had with his late wife Rebecca Ellison - while they now have Cree, four, and 21-month-old Shae together.

Kate told OK! magazine: "The big kids are very mature now. They've really grown up so we discuss everything.

"Social media for example, is a worry, maybe more so for Tia in terms of what's being pushed out about body image - the boys are a bit more relaxed about that.

"Management of the children is probably the hardest thing. They're going through so many different phases at the same time.

"We wan...