And the truth is finally REVEALED!!!
[Image via Kylie Jenner/Instagram.]
The pair have been spotted out and about together much more frequently than usual the past few months, and over the weekend was no exception! In fact, the pint-sized sibling fashionista were all over the place!
Ch-ch-check out the pair as they were spotted leaving a Hollywood hotel later that afternoon (above)!
And Saturday night, they even kicked back with other celebs at a surprise Rolling Stones concert — which kicked off the band's 50 & Counting Tour — held at the Echoplex!
What a busy weekend they had!
But we DO love to see them spending so much time together!
Now if they'd ONLY start making the Mary-Kate and Ashley Mysteries again, we'd be heaven! LOLz!
[Image via FameFlynet Pictures.]