Will Face Lift Before Invisalign Have an Effect on the Impressions?

Invisalign is an orthodontic device to straighten the teeth. Invisalign before surgery should not affect your facelift, but may slightly affect your appearance, especially if you have prominence of the upper teeth and they create an impression on your lip. This may in fact guide your surgeon to change his artistic recommendations.
You should advise your surgeon of your intention to get Invisalign, so that he can tailor his procedure to accommodate for the anticipated result.
Invisalign impressions after a facelift may be more difficult for several weeks to months, especially if you are having procedures done around the lips or the marionette region, since opening the mouth as wide as you need to create the impressions may be uncomfortable or might interfere with the surgery.

This is an interesting question. It is good that you are doing the impressions prior to your facelift.  You should not open your mouth as wide as possible post operatively. The teeth will not be affected by the facelift at all. It sounds like you will have a beautiful smile and a younger face. Best of luck to you!!!

Facelift and invisalign will have little impact on each other.  Keep in mind, wide mouth opening should be kept to a minimum immediately post facelift.

I wouldn't be concerned about having Invisalign done following facelift surgery. The facelift procedure should not affect the bony anatomy at all in terms of the maxilla (upper jaw) and mandible (lower jaw). 

Face Lifts primarily affect the soft tissues of the face and head and neck but do not usually affect the bony or dental structures. You should not be concerned about having a Face Lift performed either before or after Invisalign treatement or treatment planning.
 

A facelift will not effect your invisalign impressions. However, your orthodontia can affect your facelift results if you are undergoing movement of the jaws with a osteotmy type procedure. Most patients who are undergoing Invisalign will unlikely be undergoing a jaw moving procedure like this.