Hollywood’s biggest stars turned the Oscars red carpet into a maternity runway on Sunday, as several pregnant celebrities showcased their baby bumps on the way to the 92nd Academy Awards. Natalie Portman, who is expecting her second child with husband Benjamin Millepied, arrived in a custom Dior gown that featured intricate, shimmering beadwork and a sheer overlay that revealed her belly. The actress, who is nominated for Best Actress for her role in .