someone, eat your heart out!

someone (usually the name of a famous person), eat your heart out! {humorous} (followed by the name of a famous person, this means that you or someone you know can do something better than a person who is famous for doing that thing ) — обзавидуйся; ... отдыхает (и нервно курит в сторонке)

Example 1: I'm taking singing lessons. Celine Dion, eat your heart out! (CIDI)— Я сейчас занимаюсь пением, беру уроки пения — Селин Дион отдыхает!

Example 2: I'm singing in the village production of Tosca next month — eat your heart out Pavarotti! — ... Паваротти отдыхает.

see also
[can't hold a candle to sb]
[not a patch on sb]