Natalie Cassidy shares a rare snap with her fiancé Marc Humphreys at her daughter's birthday

Coldplay and Natalie Imbruglia pay tribute to Olivia Newton-John as they perform Summer Nights duet

See Coldplay and Natalie Imbruglia Honor Olivia Newton-John With Performance of "Summer Nights"

Natalie Imbruglia Plays Sandy to Chris Martin’s Danny During ‘Summer Nights’ Cover Honoring Olivia Newton-John