The supermodel shared the image of her left hand with followers on Instagram - and it was quickly noticed that her wedding band was conspicuously absent while she was wearing other rings.
The picture was enigmatically captioned: "Good morning xxx."
Victoria's Secret model Kerr, 29, married Hollywood star Bloom in 2010 and they have a one-year-old son, Flynn, together.
It was reported last month that the pair had been "drifting apart", but they went public to deny that there was a rift in their relationship.
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