Pistol Annies' debut album, 'Hell on Heels,' is proving to be a big hit (not that anyone's surprised). The project, spun by Miranda Lambert, Ashley Monroe and Angaleena Presley, walked into the country world with a bang, introducing itself as the No. 1 spot-holder on Billboard’s Country Albums chart this week, and No. 5 overall on the Billboard 200 chart.

"I can not believe how much the fans have embraced us," Lambert said in a statement posted on the trio's Facebook page. "We are so thrilled and even more inspired than ever. Thank you so much to our country fans. Pistol Annies are here to stay!"

While this sudden chart success is new to the Annies, it's certainly not a huge shock to the seasoned 'White Liar' singer, who has seen similar star power in her solo efforts. For Presley and Monroe, the impact that 'Hell on Heels' has had already has been overwhelming.

"I am completely overwhelmed and humbled by the response of our wonderful fans. I couldn't be more encouraged that country music is being embraced so completely," Monroe expressed. As expected, Presley shared her sentiments. She added, "Pistol Annies has been an organic, artistically driven project from the beginning and we are so proud that our couch dream has become critically and commercially successful. We are just three country girls singing about the truth and we are overjoyed by how well our album has been received."

'Hell on Heels,' which dropped on August 23, found itself at the top of the iTunes chart within just 24 hours of being released, beating out Jay-Z and Kanye West for the No. 1 spot. That's quite a feat -- even for Lambert. The band's lead-off single with the same name has proven very popular among country fans, and clearly, music fans in general.

Lambert will follow up with a release of her own this November. 'Four the Record' hits shelves on November 1.