The Princess of York, 28, wore a black coat with dark brown suede trousers and clutched a structured black shoulder bag which she kept glued to her midriff while exiting the bar.
Her tight hold on the accessory led many to believe the newly married royal is trying to conceal a burgeoning baby bump.
The younger of Prince Andrew and Sarah 'Fergie' Ferguson's two daughters has been the subject of pregnancy rumours for weeks, with British bookmaker Ladbrokes recently revealing odds of just 1/4 for the Princess to make an announcement.
"Princess Eugenie's pregnancy odds are drastically falling as speculation mounts, and the latest odds suggest it won't be long before the Royals welcome another baby into the family,” Alex Apati of Ladbrokes revealed.
Adding fuel to the fire Eugenie stepped out in a loose fitting houndstooth coat by Parisian brand Sandro for a royal wedding exhibition on March 6, causing commentators to wonder if she is starting to dress for a fuller figure.
Eugenie - who wed Jack Brooksbank in October 2018 - made headlines back in January when she declared 2019 would be an "exciting year" in a cryptic Instagram post.
In recent weeks the Princess has tellingly shared a number of throwback photos on social media, including a collage of her parents as children.
Many eagle-eyed royal enthusiasts believe her nostalgic childhood posts may be linked to Eugenie expecting a little one of her own.
WATCH: This is why fans think Princess Eugenie is pregnant!