Baby Orla Clark is the first child for the ‘Mr Selfridge’ actress and her husband Ryan.
The pair are understandably delighted and currently spending time getting used to parenthood.
"Katherine has given me the best gift in the world,” Ryan said in a statement. “[I’m] Absolutely smitten with Orla and so proud of my wife."
Katherine spent six years starring as Becky McDonald in ITV soap ‘Corrie’ before leaving the show in 2012.
She currently stars in the channel’s award-winning drama ‘Mr Selfridge’ as Lady Mae Loxley alongside Jeremy Piven.