What will happen if I only eat cantaloupe and honey dew melon?

i heard thts how lindsay lohan lost all tht weight.....how much weight wil i lose in a month?? i wanna have really skinny arms and see my rib cage, and NO innner thigh fat. PLZ tell me how much i will lose...DO NOT reccomend acai berry or tell me this is unhealthy. =) thanks!