Can Invisalign close bigger gaps between teeth and reduce large overjet? (Photos)

Generally, Invisalign can close gap effectively, especially if your front teeth are flared out initially. However, in order to close gap, there has to be adequate space between top and bottom teeth so that the top teeth don't bump into the bottom teeth when they are being retracted. Based on the limited photos, it seems you may also have smaller lateral incisors that may require restorative buildup to make them wider in order to fully close all the space. 

I've had an amazing experience with Invisalign in closing anterior spaces at our practice in New Delhi. Based on the limited photographs you have posted, seems like you have enough of an overjet to close the spaces and improve your bite as well. Ofcourse yours is not a minor case but it can be treated very well with Invisalign. I have treated many such cases of relapse and large overjets. So, don't worry and find an experienced Orthodontist.
Warm Regards.

u have class 2 molar relationship . its common in deficit mandible. in upper arch u have generalized spacing, so to reduce over jet, closing of all spaces in upper arch is must.