Ashley Graham has days when she feels ''fat''.

The 30-year-old beauty - who has quickly become one of the world's most in-demand models - has admitted to harbouring insecurities about her famously curvaceous figure, but Ashley is also eager to inspire women to be more positive about their own image.

She shared: ''There are some days I feel fat. I'm not convinced there's going to be a moment where every woman in the world wakes up and feels like a million dollars.

''So, what I want to do is give women the tools that will help when those moments come up. Sometimes it can be as easy as telling yourself that you are beautiful.''

The Sports Illustrated Swimsuit Issue star is determined she won't allow ''a little cellulite'' to stop her from being happy.

And Ashley has credited her mother Linda for her impressively positive outlook.

She said: ''My mom is the most positive person. She has always had a smile on her face no matter what came her way. After seeing that, I'm not going to let a little cellulite get in the way of my happiness!''

What's more, Ashley has urged other women to be more supportive of each other.

Speaking to StyleWatch magazine, the brunette beauty explained: ''Support each other. In the modelling industry, one woman is great, but in order to make a major change, you need a group of models supporting each other.

''At the end of the day, I just want to help other women be happy and thrive. And that's what I want for myself too.''

By contrast, Ashley previously admitted to being ''disgusted'' with her own body during her teenage years.

She said: ''I think I hit bottom around 18. I was disgusted with myself and told my mom I was coming home. And she told me, 'No, you're not, because you told me that this was what you wanted and I know you're supposed to do this. It doesn't matter what you think about your body, because your body is supposed to change somebody's life.'''