I actually like her pregnancy fashion better than her regular fashion. I like that she took a classic style instead of the tight top stretched over an uncomfortable looking belly look.
IMHO, the one and only goal of her "pregnancy" fashion was to deny that she'd gained even 5 lbs.
The 'classic' style would hide how much her waistline was expanding and, to some extent, how big her belly was becoming. Though, in some photos, it appears she purposely held her purse tight to her underbelly for the photogs. Wearing 'regular' clothes in bigger sizes with less shaping/tailoring avoided the purchase of a full pregnancy wardrobe and the question of whether to wear the celebrity favorite skin-tight PG clothes. The overall attitude seemed to be 'this phase better be over soon so I can get back to skeleton shape.'