"You've got a fan here," Stephanopoulos said when he saw Nicholson creeping up behind Lawrence, as beautifully captured by this GIF from E! News.
"You did such a beautiful job! I don't mean to crash your interview," Nicholson, 75, told the actress.
"Yeah, you're being really rude," Lawrence joked.
"Oh my god!" Lawrence exclaimed when Nicholson retreated, hiding her face in her hands. "Is he still here?" she asked, before Nicholson popped back to warn, "I'll be waiting."
Watch the magic below:
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