eat your heart out
US /iːt jʊər hɑːrt aʊt/
UK /iːt jʊər hɑːrt aʊt/

1.
used to tell someone, often humorously, that they should be jealous of what you are doing or have
:
•
I'm going on vacation to Hawaii next week, so eat your heart out!
•
My new car is a classic convertible – eat your heart out, James Bond!