Olivia Rodrigo thanked fans for what has "truly been the coolest week of my life."
Mandatory Credit:	Frazer Harrison/Getty Images

Olivia Rodrigo thanked fans for what has "truly been the coolest week of my life."
Mandatory Credit: Frazer Harrison/Getty Images

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Olivia Rodrigo's 'Sour' debuts at the top of the chart

The 18-year-old only recently stepped onto the music scene, and not only did her recent single, "Good 4 U," skyrocket to No. 1 on the Billboard Hot 100 chart, but now her album is No. 1 on the Billboard 200.