Reese Witherspoon brought her look-alike daughter Ava Phillippe to the premiere of HBO's Big Little Lies Tuesday (2/7) at the TCL Chinese Theatre in Hollywood, and it was hard to tell the two apart.

The 40-year-old actress admitted she's often mistaken for her 17-year-old mini-me—and vice versa! "People come up to her [all the time]. We were at a premiere and they were congratulating her on her performance," Witherspoon said. "She's like, 'I'm not in the movie.'"

With my ❤️always @avaphillippe .. #MotherDaughter #MatchyMatchy #Premiere #BigLittleLies

A photo posted by Reese Witherspoon (@reesewitherspoon) on

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