Lynne was born in 1964 in Wellington, New Zealand and grew up in Cornwall when her family returned to the UK in 1967.
She studied art at Falmouth Art College and then Cardiff Art College attaining a BA (Hons) Fine Art degree in 1987 when one of her figurative paintings was selected for the Whitworth Young Contemporaries.
Lynne has lived in Wales since 1987 and retains strong links with Cornwall.
In 2014 she was awarded funding by the Arts Council of Wales for a project involving study with Cornish painter Alice Mumford at the St Ives School of Painting. In recent years she has also studied with Rose Hilton at the Newlyn School of Art and Hugo Grenville in Bristol.
Lynne was elected a member of the Royal Cambrian Academy of the Arts in 2017.