After her phenomenal success with Chandelier, Sia’s career has taken off in a whole new way. This week, the singer/songwriter’s album 1000 Forms of Fear, reached the top of the Billboard 200, marking it as the best sales week of her career – and her very first Billboard No.1.

Sia performing on Jimmy Kimmel Live!

The album sold 52,000 copies in the week ending July 13. Like her last two records, it was released by RCA, via Monkey Puzzle.

The album, released July 8, aimed for a high-concept feel. Neither the cover, nor any of Sia’s promo appearances or live performances show her face and she chooses to appear instead as a faceless wig (on the album cover) or via her mini-doppleganger, Dance Moms’ Maddie Ziegler.

This is Sia’s first Number 1, but not her first appearance in the Billboard chart. She made her debut with 2008’s Some People Have Real Problems, which peaked at No. 26 and then saw reached another peak with 2010's No. 37 hit We Are Born.

More: Sia Releases Eye of the Needle As A Free Download [Listen]

Sia is best known for her collaborations with other artists, which have spawned numerous hits in recent years.

She is mostly known for guest-writing and lending her vocals to other people’s music. Sia is probably best-known as the female voice heard on David Guetta's Titanium and Flo Rida's "Wild Ones," both of which were top 10 hits on the Billboard Hot 100. Her writing resume includes Rihanna’s Diamonds, Ne-Yo’s Let Me Love You (Until You Learn to Love Yourself),Beyonce's Pretty Hurts and Britney Spears' Perfume, among others.