How many pounds should my character weigh?

I look like that, abs included, and I have a BMI of 21.5. If she had a BMI around that, she'd weigh 150lbs. If she was as low as 130 she'd be looking twiggier. It'd be different if she was short, but she's pretty tall. But I exercise waaay more than 2-4 times a week. I have a very active job and I love outdoor activities. Keep that in mind when developing your character.