The world NEEDED another hug pillow, but why stick with what others have done before?  
GOTTA BE ORIGINAL  
So this was designed to replicate what princess celestia would actually do if jumped on and hugged, as many do with these pillows.
 
the answer is clear
 
Thus the look of terror adds both realism and originality to the piece
 
Now you can enjoy the thrill of non-consentual hugging in the comfort of your own bedroom instead of trying to stay on top in the unfamiliar environment of the public bus