Who is the famous model that mother of 4 Mick children?

The model you are referring to is Jerry Hall. She is an American model, actress, and socialite who rose to fame in the 1970s and 1980s. She is best known for her long-term relationship with Mick Jagger, the lead singer of The Rolling Stones, with whom she has four children: Elizabeth "Lizzy" Jagger, James Jagger, Georgia May Jagger, and Gabriel Jagger.