Knowles gave birth to the twins last year, and they've rarely been seen in public since the singer debuted a photo of herself cradling the two on Instagram last year.
So when an image popped up at the concert of the superstar holding two babies, people naturally assumed the kids were hers.
Rumi and Sir Carter debut on #OTRII!
Jay-Z was seen with the babies in his arms too. The image of him and his wife was separated by title cards that read "Love Never Changes" and "Love Is Universal."
RUMI AND SIR CARTER YALL THEY’RE SO PRECIOUS #OTRII
On Instagram, it was a similar story...
People were incredibly enthusiastic about the images. "Look at how big they are now!!!" one person wrote.

"That's the twins!! Omg," someone else said.

"Look at those delicious chubsters!!!!!" one hyped fan typed.
@hilmonstah Look at those delicious chubsters!!!!!
Though being the bearer of bad news isn't something we here at BuzzFeed News enjoy, it seems that these aren't the twins, according to Beyoncé's representatives.
Sir and Rumi’s cameo in the OTR II introoooo
When reached for comment, asking if this was indeed Beyoncé holding Sir and Rumi, the rep's swift response was, "It's not."
Beyoncé and Jay-Z reveal faces of new born twins Rumi & Sir Carter during first show of their #OnTheRunTour in Cardiff, Wales. https://t.co/WZlTLJulkn
So who are these mystery babies? A follow-up email asking for further comment was not immediately returned.