The 28-year-old said that the birth of her brother Jack's newborn has taken pressure of her to provide a grandchild for her mother and father, Sharon and Ozzy Osbourne, reported Contactmusic.
"Mum's besotted with her first grandchild - it's taken the pressure off me. I'd love kids in the future, but I'm in no rush," she said.
And despite being blissfully happy with Matthew, Kelly said that she is in no rush to get married.
"I love being with Matthew but I'm not going to push him into proposing. These things have to happen naturally - I'm a romantic," she added.