CNN —

British actress Vanessa Kirby has revealed that she is pregnant during a red carpet event in Mexico City on Saturday.

Kirby wore a shimmering blue dress for a panel event on the upcoming movie "Fantastic Four: First Steps," in which she plays Sue Storm, cradling her bump as she took part in a photocall at the CCXP Mexico 2025 entertainment convention.

The British actress, 37, who also played Princess Margaret in Netflix series "The Crown" and Josephine Bonaparte in 2023 movie "Napoleon," is believed to be dating former professional lacrosse player Paul Rabil.

Neither of the pair have publicly commented on the pregnancy.

CNN has contacted Kirby's representatives for comment.

In November 2023, Rabil posted a series of photos of the couple on Instagram , including a shot of Kirb

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