Alexa Ray Joel Parties With Her Parents

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Alexa Ray Joel hit the Tribeca Film Festival with mom Christie Brinkley and dad Billy Joel. Christie and Billy divorced when Alexa, 23, was younger but it's good to see they remain friends. They took in Sunday's premiere of the documentary Last Play At Shea, which takes an insider glimpse at Billy's series of concerts at New York City's Shea Stadium before the landmark was demolished last year.

We have one question mark, however: What's going on with Billy and ex wife Katie Lee? That's nice that she showed up for the premiere too … so are things cool with them?