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There's nothing wrong with this, but the suit just looks like it has no silhouette.
I believe the adjustors on your braces need to be further down closer to your waist, not near your chest.
(My thoughts on this may just be entitled to black tie, rather than daily wear)
-But the outfit does look splendid.
That depends on how large the braces are, how tall he is, and how high he likes to wear his pants... don't think there's a hard rule on this
I'm short and like to wear my pants rather high so the adjusters on my "multi-fit" braces end up rather high... but that's why they're called "adjusters", right?