Is this Katy Perry's way of telling us that she's preggers?! Umm we hope not -- because that means she's probably got John Mayer's bun in the oven -- and we hate the idea that that the delightful popstar would procreate with that lip-snarling singer!

The "Last Friday Night" songstress posted the mysterious (and captionless) pic to Instagram earlier today -- and the move caused some serious drama rama on the Internet. Many speculated as to whether or not she was knocked up.

But word on the street is that die-hard KP fans refer to the singer as their "mother" -- so it's believed that the necklace is a shout-out to her fan-given nickname.

However, last month, we thought that Katykins looked like she had the beginnings of a baby bump when she performed during the Grammys.

Either way, we aren't opposed to the idea of Katy being a mom someday (we think she'd be one rad mamacita) but just not with John.