Will Teeth Appear Straight Long Before Orthodontic Work Is Complete???

I am getting invisalign. The orthodontist said it would take about 1-1.5 years. I am wondering if the teeth are straightened much quicker than that, but treatment continues for minor adjustments/ keep teeth in their positions. In other words, will my teeth be straight within months?

How Long Will It Take My Invisalign To Get Here?????!?!!?

I have went to the Orthodontist and my invisalign retainers should be coming. It feels like it has been forever! How long does it usually take for them to come in?