The snap, which also features the ex-couple's mutual friend Ed Sheeran and Instagram user 'Spikyphil', was taken at the SoHo Grand Hotel Club Room in New York City.
Earlier at MTV's VMAs Swift also made a dig at Styles when collecting her Best Female Video award for her hit song, 'I Knew You Were Trouble'.
After thanking her fans, she said in her acceptance speech: "I also want to thank the person that inspired this song, and he knows exactly who he is, because I got one of these!"
Swift confirmed in March that 'I Knew You Were Trouble' was about Harry.
Does Swift really hate Styles like her stage antics suggest or is it all part of an act? We can't be sure, but by the looks of the photo below Styles still admires her...