Patterning question...

[countess_rosina]

I recently agreed to help one of my students with a costume for her school play. We're using a Big 3 pattern, and she's bigger than the biggest size on the pattern.... I know how to do the usual slash and spread method, but it occurs to me I've never enlarged a princess seamed bodice before. Is it just business as usual, or is there something I need to be on the lookout for to keep the seams from getting weird? My current plan is to just enlarge to the largest of her measurements, and take in everywhere else like I would for a non-princess seamed pattern.

Any comments or advice would be greatly apprecitated!!!