According to reports, the Waitress star was spotted flaunting her massive diamond ring while enjoying her luxurious vacation in the romantic Italian island of Capri.
The actress' rep confirmed the engagement to Us Weekly.
Foster, 68, and McPhee, 34, have been spotted out and about engaging in some serious PDA since they began dating early last year.
Months prior to their first public make-out session, the Canadian businessman was still married to fourth wife Yolanda Hadid.
McPhee will be his fifth wife. Meanwhile, Foster will be the brunette beauty's second husband, following her nasty divorce from actor Nick Cokas.
Though fans initially believed McPhee was only staying close to Foster to boost her music career and vise-versa, it seems these two are in it for the long haul!
Do you think David Foster and Katharine McPhee were meant to be? Sound off in the comments below.
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