Miranda Lambert has shifted her seventh annual Cause for the Paws to Las Vegas today (Oct. 4) for the first-ever Route 91 Harvest Festival.

The singer will headline tonight's show at the Route 91 Harvest Festival, which runs Friday through Sunday, and all proceeds from her appearance will benefit her charity, the MuttNation Foundation, dedicated to ending pet suffering and homelessness in the U.S. and abroad, reports Taste of Country.

The Route 91 Harvest Festival also includes Lambert's husband, Blake Shelton and Brantley Gilbert, Dierks Bentley, Jason Aldean, Tyler Farr, Randy Houser, Dustin Lynch, Neal McCoy, Dwight Yoakam, plus many more.

Lambert tells ABC News Radio, "I am so excited to be playing Vegas to raise money for a cause so dear to my heart. With your donations, we are able to watch happy, healthy dogs being given a second chance at life through adoption."

The Cause for the Paws event also includes a sold-out VIP cocktail party prior to Miranda's show, complete with a live and silent auction of items from Miranda and her husband, Blake Shelton, notes wincountry.com. An online auction will go live on eBay to coincide with the event.

Last year the "Automatic" singer's Cause for the Paws raised more than $400,000 in Oklahoma, and the MuttNation Foundation has garnered a whopping $1.5 million over the past seven years.

Lambert is wholeheartedly committed to her four-legged friends. She's rescued dogs countless times at the drop of a hat, and recently announced the opening of Redemption Ranch, a five-acre haven in Tishomingo, Okla. that seeks to house dogs that would other be euthanized.