Never after weight loss, but as a "wedding present" just before we got married. He had them made into a book, which is currently with him while he's deployed, haha. He cites it as his most favorite gift ever
The photographer I used had a separate make-up guy and a wardrobe girl, and I felt absolutely stunning the entire session. The photographer also pumped me full of champagne throughout the session, so that may have helped a little!
And I think that's a fantastic reward for reaching your goal, but I also agree that maybe you should have them done now (and hey, you can always have more done later!) - I bet you'd be pleasantly surprised!