Jenner captioned a photo of them she posted to Facebook on July 8, "Mr. & Mrs." Still, it seems unlikely that Jenner would follow up a secret wedding with a relatively low-key appearance at the PrettyLittleThing USA launch party, where E! News reports the photo was taken.Maybe this is a new Facebook trend, like listing your BFF as your sibling? Or maybe Jenner just wanted to be crystal-clear about how serious the newly renewed relationship is this time around.