Just for comparison, this is William and Kate arriving last year at the same event. Kate was at a similar stage of pregnancy
Because Kate has a different body type, I think she got away with non maternity style dresses for longer. It’s Meghans first pregnancy and she’s also doing these Royal engagements for the first time, so won’t be sure where to pitch her formality of dress.
I guess she didn’t do that many red carpet events in a Toronto, (as opposed to LA) as her red carpet dressing style is definitely pitched towards warmer weather styles.
I think the busy pattern is Meghan trying to disguise her bump a bit.
She’s worn strapless 3 times in a week. Her arms and shoulders look great; so who wouldn’t show then off. However, as she has always had a great, yoga toned figure, I think her bump is throwing her and she’s trying to emphasise the parts of her figure which have not changed whilst pregnant, iyswim