
Billie Eilish left fans confused after they noticed something about one of her most recent snaps.
The 'BIRDS OF A FEATHER' singer featured in an Instagram story back on Sunday (14 December), though it wasn't on her own account.
Her friend and fellow musician Lucy Healey posted a photo of the artist, where at first glance, it looked like the 23-year-old was simply posing while drinking from a bottle.
But more eagle-eyed fans scanned the social media snap, looking beyond her navy and white polka dot top and directed all their attention to the bottle.
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It isn't clear what the drink is, appearing clear, meaning it could be anything from water to vodka.
The peculiar thing about this is that Eilish looked like she was holding a baby bottle, which left fans scratching their heads.

The Grammy-winning artist was now the subject of a photo which did the rounds on several platforms online, with many commenting on the viral pic and questioning what was in her hand.
One wrote on X: "Not to sound like ms. hetero but wtf is that in her hand."
Another said: "The baby bottle is really freaking me out," with a third pointing out: "Like it looks like a baby bottle."
The mystery was seemingly put to rest as someone suggested that it wasn't milk in there as some thought (does clear milk exist?), instead being an alcoholic drink.
"Hi, I'm from Brazil but I'm sure it's a Japanese alcoholic beverage that's sold in baby bottles," a different user claimed.
Others then agreed that it looked like an alcohol bottle, but not before links were made to a past costume of Eilish's, which made headlines back in 2022.
Back then, she was dating Jesse Rutherford, and for Halloween they decided to wear costumes to further highlight their controversial 11-year age gap.

They were 20 and 31 at the time, so naturally Eilish dressed up as a baby while her then-boyfriend dressed up as an old man, causing a lot of controversy online.
Speaking at the time, one pointed out that the artist must know how 'weird and creepy' the stunt was, while another wrote: "I feel so sad for Billie Eilish. She thinks she's being big and bad and grown trolling the haters, but she's just showing her immaturity and proving the point."
A third added: "That Billie Eilish costume is extremely disturbing and I absolutely hate it every time it crosses my timeline."
Rutherford was even called 'f**king disgusting' and 'weird as F**K' for taking part in the idea, by a fan.
LADbible group has contacted Billie Eilish's representatives for comment.
Topics: Billie Eilish, Celebrity, Instagram, Social Media, Viral