I'm sorry to ruin anyone's fantasy... but the tickler in the first half of the clip does not appear to be the ticklee in the second half. They are simply wearing the same dress. If you watch near the end of the first half where the ticklee is getting her soles tickled, you will see the tickler's hair come onto the screen for a small amount of time, and you will find that it is much lighter than later on when she is supposedly strapped to the table.
Just a little thing I spotted!
Great clip, nonetheless.