I learned a new term recently. Looks like it is a precursor state to MILF-hood.
Yummy mummy is a slang term used in the United Kingdom to describe young, attractive and wealthy mothers.
The term developed in the late 20th century, and was often applied to celebrity mothers such as Liz Hurley or Victoria Beckham, who appeared to quickly regain their pre-pregnancy figures after giving birth, and would continue to lead carefree and affluent lifestyles. Episode 13 of series six of The Nanny (airing in 1999) was called “The Yummy Mummy”. More generally, a “yummy mummy” is an often younger version of a MILF, a term used either appreciatively or lustfully, usually by a man, to refer to a young mother with whom he would like to have a sexual encounter.
The stereotypical yummy mummy was described by Nirpal Dhaliwal in The Times as having an existence “bankrolled by a husband working himself to death in the City, [dressing] in designer outfits… carries the latest must-have bag [and] whose hair and nails are perfectly groomed”. A yummy mummy would have several children and yet remain a “girl-about-town”, dressing fashionably and appearing well-groomed and carefree.