VIDEO: Sia Performs 'Unstoppable' & 'Cheap Thrills' on GMA

Australian singer/songwriter and multi-platinum artist Sia perform her hit single Unstoppable' and 'Cheap Thrills' off her new album, "This Is Acting" on the "GMA" Summer Concert Series. Watch both performances below!

About GMA: ABC News' popular morning program, "Good Morning America," is anchored by Robin Roberts and George Stephanopoulos. Amy Robach is the News Anchor, Lara Spencer is Co- Anchor and Ginger Zee is the Meteorologist.

Now in its 38th year, "Good Morning America" is watched by millions of people who wake up to the show's award-winning combination of breaking news, hard-hitting interviews, exclusive investigations, cutting-edge medical information, and financial reporting. The week of April 9, 2012 "Good Morning America" was the #1 morning newscast for the first time in 16 years, snapping NBC's historic 852-week winning streak.

Image courtesy of ABC

2026 Theater Fans' Choice Awards - Live Stats

Best Costume Design - Top 3

1. Ryan Park - The Lost Boys

29.7% of votes

2. Qween Jean - CATS: The Jellicle Ball

14.1% of votes

3. Linda Cho - Schmigadoon!

12.7% of votes

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