K. Stew Attends BFF Riley Keough's Bachelorette Party

While Kristen and Riley have clearly maintained a close relationship since filming the Floria Sigismondi-directed flick, some fans previously speculated that their friendship was on the rocks after Keough was rumored to be dating Kristen's ex, Robert Pattinson.

However, the redhead's rep debunked the dating rumors back in July 2013, and just three months later, her mother, Lisa Marie-Presley shot down the fabricated reports during an appearance on Watch What Happens Live. 

"I don't want to say who she's with...I will say who she's not with and that is a complete lie, and the silliest thing I've ever heard, is that she was with Robert Pattinson because her and Kristen Stewart are like best friends," Elvis Presley's daughter told host Andy Cohen. "So that was the craziest rumor that I will put to bed."

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