Beautiful.
First, the great website on plus-size models and timeless beauty:
http://www.judgmentofparis.com/
I've had a quick browse through agencies' sites, but couldn't spot the lady we're looking for. If you'd like to try:
http://www.judgmentofparis.com/links.htm
Can't help but quote from Violent Femmes:
"a little extra weight would never look no nicer on nobody else but you
and I could always use a little bit more
to hold on to
and if I get a fright in the middle of the night
I'll cling to you"
(Though I disagree with the song title: "Fat".)