Top canines turned inwards, causing a gap: Will Invisalign Work for Me? (photo)

My top canines have always been slightly turned inwards, causing a gap between the canines and incisors on both sides. I am 31 and within the past 2 years, it looks like my teeth are shifting and the gap is becoming larger. Aside from the canines, my teeth are fairly straight; based on my pictures, would I be a candidate for Invisalign, rather than traditional braces? If so, how long do you think I would be required to wear them to see positive results? Thanks!