Kate Moss, the supermodel that helped bring the super skinny look to the fashion runway, celebrated her 38th birthday on Monday.

It seems like only yesterday that the British model and designer was a fresh-faced young thing strutting her stuff on the runway.

Discovered at the tender age of 14, she's caught eyes ever since. She and Mark Wahlberg, then known as Marky Mark, famously posed together for Calvin Klein ad campaigns in the early 90s.

Moss' teeny frame would help to create a new standard of beauty in the modeling world, popularly known as heroin chic. Bustier and healthier looking models suddenly became a thing of the past as a more waifish frame became the desired -- and required -- body type in the industry. Super skinny, hollow-cheeked models continue to dominate the runway today (Victoria's Secret models being the exception, of course). The prevalence of said models have caused fashion show organizers around the globe to question definitions of beauty.

Despite her thin frame, Moss has denied ever having an eating disorder. But something she told Women's Wear Daily in 2009 got her some negative press.

Nothing tastes as good as skinny feels, she said when asked if she had any mottoes. That's one of them. You try and remember, but it never works.

Moss has, however, admitted to partying a little too hard. She's had at least one stint in rehab. In 2005, the Daily Mirror published photos of her allegedly snorting cocaine. The Guardian published a statement she made in which she apologized for letting people down, though she did not admit to drug use.

I take full responsibility for my actions, she said. I also accept that there are various personal issues that I need to address and have started taking the difficult, yet necessary, steps to resolve them.

Moss seems to have calmed down in recent years. She has designed hugely popular clothing lines for British retailer Topshop. In 2011, she married fellow Brit and The Kills musician Jamie Hince. She has one daughter from a previous relationship.

Here are some of Moss' looks throughout the years.