I lost a lot of hair after my dramatic weight loss, however recently I've noticed it growing back in. There are a lot of those little new growth flyaway hairs, very comforting to see indeed.

Don't worry about it. The hair loss has to do with the stress of shedding a lot of body fat; your body doesn't understand what a diet is, it views the weight loss as a mini-famine. It is very stressful to the body, and like any kind of stress, it results in hair loss. When you stabilize your weight or slow down the rate of your losses, the hair will return.