Just a few days after sharing the news, Beatrice put her bump on public display for the first time while attending a costume party in London to celebrate the Chiltern Firehouse's 10th anniversary.

Beatrice is the first daughter of Prince Andrew ... Pregnant Princess Beatrice Makes First Appearance Since Baby News at Costume Party in London Why Pregnant Princess Beatrice's New Baby Will ...

Princess Beatrice is doing maternity style the royal ... To ring in the spooky season, the famed venue threw a costume party, and Bea made sure to bring her A-game in a white Venetian-style ...