Kirstie allsopp is titled and wealthy and had a fabulous start in life with amazing parental connections and assistance:
"She is the daughter of former chairman of Christie's Charles Henry Allsopp, 6th Baron Hindlip and Fiona Victoria Jean Atherley (née McGowan, born 1947).[3] She has a younger brother Henry, and two younger sisters, Sofie and Natasha.[4] Due to her father's peerage, she is entitled to use the courtesy style The Honourable Kirstie Allsopp. Designer and businesswoman Cath Kidston is her cousin[5].
The ten schools she attended as a child [6] included St Clotilde's in Lechlade, Gloucestershire[7] and Bedales, near Petersfield, Hampshire. After spending time in India teaching English, Allsopp returned to the UK and began a series of positions, working for Country Living and Food & Homes Magazine and her mother's business, Hindlip & Prentice Interiors, and studying at Christie's. Allsopp set up her own Home Search company, Kirmir, in 1996, focusing on top end purchases in Central and West London.[8]"
Sorry it's wiki 
And while I agree it is great that she doesn't make her money by taking her clothes off and it's nice to have a reasonably watchable female presenter who actually does something, her background is extremely rarefied and aspiring to "be like her" is pretty remote for most young women in the UK.
I prefer sarah beeny anyway