Bayer took part in a Weekend Update segment comedy skit about 1990s nostalgia as the TV character, complete with her famous hairdo, and was joined by the real Aniston, her co-star in new movie "Office Christmas Party," who appeared not to be amused by the impersonation, reported USA Today.
"What are you doing here?" asked Bayer as Aniston made a surprise appearance on the segment.
"For the last 12 days you've been texting me every day to come and visit you," Aniston said.
Aniston returned for another surprise skit about women in Hollywood with show host Emma Stone and SNL regulars Kate McKinnon and Leslie Jones.
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She groused about female stars having to act a certain way so they don't get "labelled as difficult".
"Ghostbusters" star McKinnon provided the comedy as veteran actress Debette Goldry, and hammered home how difficult it was for actresses in her day, adding, "You gotta eat arsenic to make your skin pale... Samuel Goldwyn had a rule that all his starlets had to eat arsenic to make their skin glow and then they discovered it made us... Psychotic, so to calm us down they'd send in the monkey with a tray of opium, you know how it goes."