Searched high and low here. Seems she's a new one. Would love to see more of this blonde beauty.
http://galleries.coolios.net/modelflats/Margo_on_the_chair_by_Modelflats/
http://www.spicybodies.com/pictures/Margo_s_pink_lingerie_through_curtains.html
http://www.spicybodies.com/main/links/viewgal/?lid=Margo_s_pink_lingerie_through_curtains&i=7
Not new at all. She did appear with Modelflats 2003-2004. Modeflats site ceased to exist 2006.
There was a thread for her but only dead links.