The US singer's body has been buried in the sand in the photo and her tummy is noticeably rounder than usual. Is there a baby in there - or has Blue just gone to town with her bucket and spade?!
Beyoncé posted the picture on Instagram last night, although she didn't caption it. As a result, her fans have been speculating as to whether there is another Baby Carter on the way...
"Bey!!! Are you sending hidden message of being prego?!?!" one asked. Another said: "Hmmm, is she really pregnant?"
One of Beyoncé's followers simply said: "#hopeso #babynews." The superstar has not responded, only adding to the hype.
Beyoncé and Jay Z, who married in 2008, welcomed Blue Ivy into the world in 2011 and the latest rumours of another baby began circulating in September last year.
During the couple's joint 'On The Run' tour, Jay reportedly took to the stage in Paris and changed the lyrics in the track 'Beach Is Better' to say: "Because she pregnant with another one."
This isn't the first time the couple have been at the centre of pregnancy rumours though. In June 2013, Beyoncé laughed off baby whispers after cancelling a gig due to tonsillitis.
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