"The Merc May Be Filthier, but Her B.O. is Stronger," Reynolds captioned the pic. "Congrats #WonderWoman #BoxOfficeBoss."
While Deadpool's worldwide gross of $783.1 million is still higher, Wonder Woman's take is catching up quick, and currently stands at $747.5 million.
On July 5, the actor shared a snapshot from a nature hike, in which he is smiling under a giant wooden sign that reads "CABLE POOL."
"Went for a hike and saw this. It's a sign. It's also a sign. #Cable #Deadpool2," the star wrote alongside the pic.