Always For Me is a great site for swimsuits for big and tall girls.
I bought 9 of their chic brand swimsuits. They are made really well and have longer torsos for a tall girl. They also accommodate a bustier girl. The prices range from 70 to 80 Dollars but are worth every penny. They were also on Oprah's Favorite pick 1 year ago. With swimwear weather coming soon I thought I'd let you girls know.
Love Cassie (6'5").