Couple were due to tie the knot in August
The model and Canadian ice hockey player were due to marry on 14 August.
‘Everything was in place for their wedding,’ a source tells The Sun. ‘She had the venue, the designer dress, the guest list.’
Jarret, 27, proposed to Rachel, 39, last year.
She finalised her divorce from Rod Stewart, 64, in 2006, and they have kids Renee, 17, and Liam, 14.