updated 02/14/2012 AT 5:00 PM ET
•originally published 02/15/2012 AT 1:35 PM ET
She’s conquered one of the highest peaks of beauty today – appearing in the Sports Illustrated swimsuit issue – and now former plus-size model Crystal Renn says she’s experienced every aspect along the modeling spectrum.
“I have been a double-zero to a 16 even, for a bit,” she tells PEOPLE. Now to settle at a [size] six or an eight, it’s a really interesting place to be, because there are very few sixes or eights.”
And though Renn, who’s now a designer 10 in some clothes, still might not be the skinniest model at the SI shoots, she no longer feels any pressure to change, she says.