The younger daughter of Sarah Ferguson and Prince Andrew, who married her longtime love Jack Brooksbank last October in the second royal wedding of 2018, sparked a flurry of rumours after she posted a telling throwback photo on Instagram yesterday.
And adding fuel to the fire, eagle eyed royal fans think Fergie may have already given the game away with a post of her own over Easter last month.
WATCH - the moment everyone realised Eugenie could be pregnant!
The Duchess of York gave followers a peek into her personal life by sharing a sweet shot of a yellow iced ring cake decorated with chocolate mini-eggs, strawberries and blue and pink flowers.
"Happy happy days of sun and blossoming joy today and always," she wrote in the caption.
The flame haired royal added a second photo to the post - a close up of a pretty pink flower.
The unusual post led many fans to believe the outspoken mum was hinting at a gender reveal for the younger Princess of York.
"Lovely! Am wondering if there's a hidden message in your post... 🤔," one fan questioned.
The comment certainly could be true - many baby celebration cakes are a gender neutral colour like yellow.
And the addition of the pink flower certainly has some thinking it could be a girl!
Fans have been preoccupied with the prospect of another royal baby for months, with many sending newly married Eugenie love and questions on social media asking is an announcement could be on the cards for her and Jack.
"Can't wait until we get a Royal Baby Brooksbank - you're my favourite royal couple!" one person wrote on the Princess' latest photo.
In the UK, fans are so sure that Prince Andrew's daughter is pregnant that British bookmakers have slashed the odds on Eugenie and Jack confirming that they are expecting a baby.
Odds are now at 1/4 with bookies expecting an announcement any day now.
“It looks like the Royals are getting broody,” Alex Apati of Ladbrokes told The Sun.