BARNSLEY actress Katherine Kelly has spoken about her baby joy, revealing that she and husband Ryan Clark want the baby's sex to be a surprise.

The 33-year-old said she and Australian Ryan had not wanted to find out whether it's a girl or a boy at her 20-week scan.

"There are very few surprises in life and we're not bothered if it's a boy or a girl, it will be nice to see on the day," she said.

"We know how lucky we are. I've always wanted to be a mum, more than I wanted to be a wife!

"Everyone is so excited and Ryan is Australian so we've got a whole family on that side of the world and family in America - I think it will be a jet-setting child."

Katherine will be taking maternity leave from the end of November and has been scaling down her workload.

She has finished filming Mr Selfridge, which will be aired in January but will honour long-standing commitments to the Lamproom and The Co-Operative, whose adverts she voices.

"It's time to be a mum for a while. I just really want to have that time to get to know the baby and bond."