A true fashionista is measured by how many times she can change her clothes in the span of a day. And we're not talking pop stars who perform four songs, drop below the stage at their concerts and have a glam squad help them in and out of a new costume -- we're talking about the effortless swap from one gown or couture outfit to the next.

And that's what Oscar winner Jennifer Lawrence did at Cannes this weekend, wearing four --count 'em, FOUR -- fabulous outfits in one day.

We've got photographic evidence of three of her looks, which were all Dior. That's not just because she has good taste -- she's also a new Dior spokesmodel, so of course the house will consistently dress her.

At a 'The Hunger Games: Catching Fire' photo call, she donned a midnight blue ruffled Dior bustier top and Dior pants that, when combined, looked like a jumpsuit. She paired the look with bright and juicy Manolo Blahnik heels. (Remember him? He was the OG celeb stiletto maker, before Jimmy Choo and Christian Louboutin got in on his A-list steez.)

Ian Gavan, Getty Images

At the premiere of 'Jimmy P,' she donned a black and white Dior column gown and a pair of Jimmy Choo heels.

Andreas Rentz, Getty Images

At a 'Catching Fire' fete, she returned to Dior, this time in the form of a strapless white frock with an embellished waist and pockets, paired with pretty pink heels. There's conflicting intel on whether those are Manolos or Choos, but either way, they're sexy and add a pop of color.

Samir Hussein, Getty Images

She also wore a gray Dior dress later that night, capping off a busy day of Dioring it up.

And she never had to sing a single song.