What do you think of my body?

size isn't the issue. Modeling agencies choose their models based on whether they feel the applicants have a marketable "look." If they think you got the look, they'll hire you. Having larger will be an advantage for modeling swimwear or lingerie, but the people who are saying it'll be a problem for fashion modeling are incorrect. Again, if they like your look they'll bring you in and find you modeling gigs with designers who either (a) want someone with a larger chest size, or (b) will work with what you give them.