The Neighbours star, who has played Libby Kennedy in the soap opera on and off since 1994, has shared a picture of her sportsman fiance Trent Croad kissing her baby bump during a vacation.

In another snap, published by Australia's Woman's Day magazine, Valentine, 38, is sat cross-legged in front of a tropical ocean, forming a heart symbol with her hands over her blossoming belly.

The couple, which became engaged in March (15), are "blessed beyond belief", she tells the publication. "To be here with each other at this point in our lives is everything that happiness looks and feels like to us."

The new arrival is expected in May (16) and will be the younger sibling of Valentine's 12-year-old daughter Millana from a previous marriage.

Croad also has two children with his ex-wife.