The Las Vegas Aces' 70-69 win over the New York Liberty granted them access to an exclusive club.
Driven by WNBA Finals MVP A'ja Wilson's 24-point, 16-rebound effort in Game 4, the Aces are the WNBA's first back-to-back champions in over two decades.
"There was a lot of years that we weren't so super, but you can't build a superteam in a couple of months. It takes years, and I'm really proud of this group," Kelsey Plum said after the win.
The Lisa Leslie-led Los Angeles Sparks were the last team to accomplish the feat, in 2001 and 2002.