Fans rushed to Yes24 on Thursday night to snag tickets to the group's two-date solo concert, Red Room, causing the website to crash underneath all the pressure.
Tickets for the two shows, which will see Red Velvet perform for approximately 8000 fans, sold-out in seconds.
The concerts will be held at Olympic Park Olympic Hall in Seoul on August 19 and August 20.
In other news, Red Velvet are currently busy promoting their latest single "Red Flavor." The bubbly song is already a huge hit on the digital charts and has racked up over 12 million views on YouTube in less than a week.
It looks like Red Velvet are more popular than ever these days!
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