She began in a freelance capacity and sold sketches to scarf brands Richard Allan and Jacquar.
She was taken on walks by her father which garnered an interest in nature,[6] and taught her to concentrate on butterflies wings.
[2] Collier left school with three O Level qualifications at the age of 15 and attended catering college.
[4] She started her career as a freelance textile designer in a self-made studio in a spare bedroom in her South London home.
[2] She firstly worked for the Tana Lawn cotton range and specialised in floral prints dresses, and supplied Liberty scarves with designs.
[8] Collier became determined to supply wholesale quantities required for couturiers ready-to-wear collection, and do a similar action for furnishings.
[4] Collier worked on the design for the first off-the-peg collection by Yves Saint Laurent, along with Bill Gibb, Cacharel, and Daniel Hechter Paris.