Many stars took to Twitter to pay tribute to late country singer Mindy McCready, whose troubled life came to an end at 37 Sunday, as police said she shot herself in the head at her Heber Springs, Ark. Home.

Carrie Underwood: I grew up listening to Mindy McCready...so sad for her family tonight. Many prayers are going out to them...

LeAnn Rimes: My heart goes out to Mindy McCready's family. I knew her well. It's a horribly tragedy. May peac