We all have those days when we feel super good about ourselves-when we look in the mirror and think, "Na, I don't need to lose weight. I look pretty good."

Those days are great and make us feel so good, like we could do/wear anything!

But unfortunately, with those days come the other days. The days when we look in the mirror and think, "I look absolutely disgusting. I don't want to leave my house. Why would anyone love me."

These days are the ones that really take a toll on us, wearing down our emotions and making us feel worthless.

I'm having one of these days today.

It didn't start by looking in the mirror. It started by looking at a photo I am in with a few girls that are undoubtedly skinnier than I am (I've come to accept a long time ago that I will never be a size 2). What I guess I haven't come to accept is that there will be instances where I am the fattest in the room.

So what can you do when you have one of these days? You can say you're going to do something about it. How many times have I said I was going to do something about it? About a million.

But here goes a million and one.

I haven't seen one in a long time, but I remember how I felt when Dove roled out its advertisements with the plus-size models.

These women were undoubtedly beautiful, but as opposed to the models we are used to seeing, they had curves, rolls, and patches of cellulite-qualities that some might not want to see.

The idea of the advertisements was not to gross America out-it was to tell America that real women do have curves, cellulite and rolls, and that we should get used to seeing it.

How did I feel when I saw these commercials. Well, part of me thought "YES! Now all the men in the world will understand! This is what we really look like" and that I would feel more confident in my bathing suit. Another part of me felt that if my curves looked like these ladies', that maybe I would fit into a class of plus-size and while this is definitely true, I did get a little sad thinking of myself as plus-sized.

A new study out of the University of Arizona found that while these advertisements aim to make women feel better about themselves, they actually end up making us feel worse.

According to the study, women who are larger feel better about themselves when ads don't include any models, women who are average-sized have low-self esteem when they are looking at an ad with plus-sized models and women who are thin would rather see models who are thin.

What do YOU think? Do plus-size models positively or negatively influence your own self image?