it's to die
Also, it is to die for. It's extraordinary; it's deeply appreciated and/or greatly desired. For example, Her performance, it's to die! or That mink coat—it's to die for! This hyperbole is usually put as an exclamation. [Slang; 1970s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.