I saw this article in Parenting magazine about the "fun" things toddlers do, and this couldn't be mire appropriate. This particular "syndrome" definitely describes DD right now (which is strange because she's always been so independent).

Carry Me All The Time Syndrome (CMATTS)
Definition:
The child refuses to be put down over a 12-13 hour period. Patient is unable to extend his or her legs enough to stand on and will make horrible noises when falling beneath a parents waistline. In extreme cases, the child won't permit the parent to sit down, sometimes resulting in Collapse of the Caretaker (COTC).