I think you see that because her confidence is back to wear tight dresses.
Choosing an Armani dress might not be by coincidence imo, but there must have been better ones.
http://www.redcarpet-fashionawards.com/2017/05/24/cannes-film-festival-day-7-red-carpet-roundup/
and this dress was unflattering even for that model who wore it on the catwalk
http://www.vogue.com/fashion-shows/fall-2016-couture/armani-prive/slideshow/collection#45