I made this for you:
dl.dropbox.com/u/23138239/drag%20object.capx
Clothes will go to a pre defined position when mouse button is released in a -15 to +15 pixels distance on X and Y to that position.
Now if you want to release it over a moving object than you should make the clothes have a pin behavior and pin them to it in the third and fourth events.
After that you should set an every tick event activated only when the clothes are in the righ position (you can make that using the system in the third and fourth events or using instance or local variables.
This event should set the clothes to the character's position on the image points specified for them or you could use some math to set X and Y coordinates by the character's coordinates.
Hope this isn't confusing a lot, i'm kinda drunk :P