May 26, 2012 01:00 PM

David Silpa/Landov

She endured a 14-hour flight from Los Angeles, but you’d never know it when a pregnant Reese Witherspoon showed up at the Cannes Film Festival on Saturday in a form-fitting black jersey dress that showed off her bump.

Witherspoon, who also wore dangling diamond earrings and sky-high fuchsia stilettos, flew to Cannes with her husband Jim Toth to promote her new movie, Mud, which premieres Saturday at the festival.

The new addition will join elder siblings Deacon, 8½, and Ava, 12, from Witherspoon’s prior marriage to Ryan Phillippe.

RELATED: BumpWatch: Reese Witherspoon Goes Undercover

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