She calls her costar's new rap career antics "odd" and says he needs "to get some authenticity"

Gwyneth Paltrow has some advice for her friend and costar Joaquin Phoenix about his new career path: Get some street cred.

Popular belief is that Phoenix’s saying goodbye to acting and launching a hip-hop career could be an elaborate hoax, despite his publicist’s assertions to the contrary.

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“I think that there might be some other explanation or something going on. I’m not quite sure what, but I can’t believe that he’s really going to quit [acting] forever to become a rapper,” she told MTV UK during a promotional junket for Two Lovers. “It seems odd.”