This is a video of how to submit to a magazine which I made today. I hope it gives you insight into how to submit your photos to magazines. Magazines such as Glamour, Marie Claire, Latina, Teen Vogue are all good choices.
Submit a headshot and body shot but nothing too sexy, you want the images you send to look as editorial as possible. Editorial as in, the photo looks like it tells a story. For ideas look in the magazine before you submit! Focus on the editorials involving fashion, and accessories, style and what not to wear, how to look good any size, and tips and tricks for fashion.
You will see magazines Do use models and people of all sizes and shapes.