It IS a bespoke McQueen, with some nice details, like the pockets in front being connected by a kind of peplum in the back

Yes, she delivered. Yes, she is also wearing a nicely decorated beret. Yes, the overall look is fine.
She's even wearing block heels for a change.
However, it's a typically Kate outfit. Color seen a thousand times, silhouette seen a thousand times, no surprises.
Which is why I can't really say that she "stuns". She's looking the part, yes, totally appropriate 'n all, but "stunning" is different ("stunning" was the BAFTA gown).
I wish she'd more often try at least a tiny step out of her fashion comfort zone.
But then it wouldn't be Kate ...