Mary-Kate Olsen MKOlsen083107_club.jpg

Check this out ... a reader sent an email with her report of what how Mary-Kate spent her night on Saturday at Teddy's after getting her hair did on Friday (above photo and video below) ... Here's her report, verbatim:

Mary-Kate Olsen. MK wearing see-through green dress, completely wasted humping and grinding against a column with another girl. flailing all over the dance floor. then made out with various questionable men while friends took pictures. then completely fell over onto a table and proceeded to break every glass on the table before toppling over onto everyone sitting behind her. quite an interesting sight. who knew?