Once friends, now foes? A lot is being said about Taylor Swift and Charli XCX , two very popular singers and fan favorites on music charts. They were once the best of pals, hanging out at parties and posing arm-in-arm, but recent developments suggest that the two may have buried their good old days together and moved to a more hostile progression, possibly involving their present and past love interests. The drop of Tay Tay’s latest album, The Life of a Showgirl , is somewhat of a cherry on the cake, with comparisons being drawn to their real lives. So here’s a look at all the details of their alleged feud.

iHeart Catch Up - 2014

The first known public interaction between the two stars dates back to December 2014, when they were snapped together at the iHeart Radio's Jingle Ball co

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