Ariana Grande's rabid fans can call for Wendy Williams' head all they want -- as long as they've got the time and energy to waste ... according to Wendy herself.
Our photog spotted Wendy leaving her studio in New York, and she fired back at Grande's fans ... who've been campaigning for Wendy's show to get yanked.
They've had beef ever since Wendy said this about Ariana: "She’s 21. She’ll forever look 12. Which, I don’t mean that in a good way…"
Fans think WW was body shaming the pop princess, and #CancelWendyWilliams went viral -- but watch. Wendy doesn't have time for these "kids."