Christina Aguilera Uses Pregnant Belly as a Table in Hunger Relief Campaign Ad

Christina Aguilera used her pregnant tummy as a prop in adorable new photos promoting the Tuesday, Aug. 5 launch of the World Hunger Relief's "Pass the Red Cup" challenge.
In the sweet snapshots, the pregnant star, 33, wears a denim jacket and white dress that cascades over her burgeoning bump. Aguilera, who's served as a global spokesperson for WHR (which benefits the U.N. World Food Programme) since 2009, uses her belly as a table top to write a message on a cup.

The star is challenging her fans to #PassTheRedCup on social media, which looks to fight global hunger.