Since its initial release back in 2012, Instagram has changed the way we share pictures of our food, dogs and desperate gym selfies, but what hasn't changed much is the way it's actually laid out.
But that could be set to change, as some users have reported seeing a sleek new monochrome design on their homepage, a move away from the original Facebook-esque blue banner. The update also features modified icons, including a more contemporary camera logo as well as a change-up to the way the notifications feed looks.
As it stands, though, the update is only a design test, with an Instagram spokesman saying: "We often test new experiences with a small percentage of the global community."
Is it time for a change? Or do you stick with a winning formula? These are the big questions that keep us up all night.