The holidays really do bring everyone together!
ET's Cameron Mathison was at the premiere of Office Christmas Party in Hollywood on Wednesday, along with two of John Mayer's famous exes. Katy Perry and Jennifer Aniston happily greeted one another on the red carpet with a hug and even posed together.
Both ladies were dressed to the nines, with Aniston, 47, wearing a low-cut patterned Roberto Cavali dress that she paired with Brian Atwood sandals, Fred Leighton jewelry and a Tom Ford clutch. As for Perry, 32, she opted for a sleeveless black gown with a slit up to the thigh that she accessorized with a large pearl choker and dotted black tights.
Perry dated Mayer off and on from 2012 to 2015, while Aniston was with the 39-year-old singer-songwriter from 2008 to 2009.
Andy Cohen recently noted in his book, Superficial: More Adventures from the Andy Cohen Diaries, that Mayer nearly came face to face with Aniston at a restaurant in New York City, but Perry actually did run into her ex at Drake's 30th birthday party in October. Also there was Mayer's other ex, Taylor Swift.
Here's a look at what could have been a very awkward evening: