Winqvist was born in Helsingborg, Scania, Sweden and studied business and social science at upper secondary school.
She won the Miss Sweden pageant in her home town, Helsingborg, after several months of a recruitment process.
She was crowned on 21 April 2007 by her precursor, Josephine Alhanko, who was semi-finalist at the Miss Universe 2006 pageant, held in Hollywood.
Isabel Lestapier Winqvist married Peter London, bassist from the Swedish glam metal band Crashdïet, on 25 June 2010 at the Hedvig Eleonora Church in Stockholm.
[2] In July 2014, Isabel Lestapier Winqvist married businessman Hans Isoz in Stockholm.