She was chosen as Playboy magazine's Playmate of the Month in October 1970, together with her twin sister Mary Collinson.

The Collinson twins first arrived in Britain in April 1969,[1] and prior to their appearance in Playboy one of the first people to use them was the glamour photographer/film maker Harrison Marks who cast them as saucy maids in his short film Halfway Inn.

Madeleine married a British Royal Air Force officer and raised three children.

In her final years, Madeleine Collinson lived in San Gwann, Malta.

After several months of illness from advanced emphysema, she died at Mater Dei Hospital in Msida on 14 August 2014, following an electrical blackout which had stopped her ventilator two days earlier.