I think it was a tough year for Meghan style wise.
Her stomach sort of popped early and it was one of those bumps that altered shape whenever the baby somersaulted 
She definitely had an established image of herself that Kate didn't and little time to build a working style from which to adapt a pregnancy look.
Some of her misses for me was when she didn't let go of her usual tailored look for looser styles. Successes were the eventual embracing of the galleon in full sail that some pregnant stomachs can look. She suffered from media comparison to Kate's very small and compact pregnancy bellies and a shape that changed between morning and evening engagements.
Kate for me had strong evening wear (burn the Erdem Kate. Burn it all!!), owning the awfulness of headbands without giving a fuck and whenever she stopped trying to dress like a 70 year old woman. So trousers, less formal events with mud or kids. She just needs trousers that don't cut off circulation to stop me wincing when I see her skinnies.
Beatrice and Eug: For taking risks and enjoying style chances at their finger tips. Eug does need a bra intervention, but I'd kill for their shoe and handbag collection.
Bea gets an honorable mention for the green Christmas day headband that did make me consider buying one of my own.