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Being a mum is hard but I'd love more babies says Billie

Former Doctor Who star Billie Piper has confessed she finds motherhood both "beautiful and brilliant" and "tough and testing", but she still wants to have another baby.

The 27-year-old Diary Of A Call Girl star -- mother to 16-month-old son Winston with actor husband Laurence Fox -- told how coming from a big family has made her want brothers and sisters for her son.

She said: "Both of us are from really big families -- Laurence is one of five, I'm one of four, so it's just madness and hysteria all the time.

"It's nice coming from a big family, but I'm not sure if I could go for the four -- certainly not the five."

And her 26-hour labour followed by an emergency Caesarean section with Winston has not put her off.

"I think you have selective memory when it comes to those things so I really hope I can have another child. We'll have another child, but I'm not sure when that will be."

She said of motherhood: "I'm endlessly surprised by how brilliant and beautiful it can be but also by how tough it can be at times.

"We're in a very fortunate situation whereby we live comfortably, and we're very lucky, but it's very testing."