The woman who made headlines for photobombing Stephen Curry at an NBA game is making a no-brainer business move -- she's joining OnlyFans.
As TMZ Sports previously reported ... Katherine Taylor went viral back in March when she was spotted cheering on the action in a low-cut top at the Warriors' home contest against the Milwaukee Bucks -- and a ton of horny hoop fans rushed to social media to track down her identity, which didn't take long.