I do not have much knowledge in regards to board certified plastic surgeons in Seattle but a simple google search will probably help you.Be sure they are certified plastic surgeons and then schedule a consultation. Explain what your desires are and the look you wish to attain. Fat transfer (Brazilian Butt Lift) would be a great option. A Brazilian butt lift, otherwise known as a gluteal augmentation, is a surgical procedure involving fat transfer. A fat transfer occurs when fat that is removed from certain parts of the body and is processed, cleaned, and readied before being re-injected or grafted back onto your buttocks. A butt lift of this nature gives you a firmer, more proportionate posterior while also improving your hip to waist ratio. Best of Luck to you.