40 of Kate Middleton’s Best Formal Looks

Kate was a true icy vision in this snow white ballgown. Plus, this dress looks completely new to us, so the duchess didn't opt for an outfit repeat this time around!

Kate has worn this blue dress a couple of times now, but she still manages to look better and better each time she wears it.

Kate has worn this gown a couple of times, too, but the best time was when she paired it with an unbelievable pregnancy glow. Who needs makeup at that point?

OK — if there's one thing duchess Kate and duchess Meghan are showing us, it's that cape dresses are coming back!

Only Kate could pull off this much bedazzling. We don't know how she shines brighter than the jewels on her dress, but here she is!

We've said it before, and we'll say it again … emerald is Kate's color! Please keep buying more of this rich green shade, Kate.

Will the duchess ever be washed out from one of her all-white ensembles? We're banking on one day short of never.

Kate and Will attended a Bollywood premiere, and the duchess definitely dressed for the occasion. But then again, when has she not?

This dress would look absolutely atrocious on anyone else, but somehow this lovely duchess pulls it off with so much ease.

This dress looks equally as comfortable as it does elegant. This was definitely a wise choice by our favorite duchess.

She can't really go wrong with lace, now can she? There isn't anything more elegant or royal than a delicate black evening gown. Nice job, Kate.

We're loving the simplicity of this look. Kate has her hair in a ponytail with a classic white gown, and the result is absolutely perfection.

Kate was back at it with the glitter and sparkles. Seriously, we think her beauty is more enhanced the brighter her dress shines.

This is definitely one of Kate's more interesting choices for a formal gown, but she is still rocking the look. There isn't anything this duchess can't wear.

OK — we can't with these two. Kate's dress may be simple, but she and Will are still looking like one rock star royal couple.

The duchess … in a strapless dress??? What would Queen Elizabeth think? See, Meghan wasn't the first duchess to bend the rules a little bit.

And the black lace strikes again! Hey, if she's got the budget for it, then why not buy all the lace the royal family can afford??

Kate's draped dress looks like something out of a Greek tragedy, but we know there's nothing tragic about her royal life.

This gown looks more like something we would have worn to our senior proms, but somehow, Kate still makes it look completely regal.

Kate isn't afraid to go bold with her colors. She's worn bright yellows, pinks, and of course, she's no stranger to the daring reds.

But when Kate does decide to go on the softer side with her colors, she still looks just as elegant. We're loving how this light purple looks on her!

I mean … there are almost no words. This was one of her early royal looks, and boy has she been killing it from day one.

This isn't a dress that we would have automatically picked for the duchess, but she definitely just went for it … and succeeded, unsurprisingly.

Well … sorry, Kate, but we don't think you'll ever be able to top this gown. But then again, why would she want to?

This dress looks like it should be a sweater or a jacket, but nope, it's an elegant gown. This has been one of Kate's go-to's for a while now.

Back in the early days, Kate stepped out in another prom-looking gown, but we're going to forgive her for this one. Plus, she still looks beautiful, so this really can't be that much of a misstep.

Most people shy away from bold and busy patterns while they're pregnant, but not Kate. She's ready to wear it all.

Some people weren't total fans of this dress, but we think it gives Kate an irresistible vintage vibe, so we still say it's a win for the duchess.

We're loving the Victorian era vibe that this dress has going on. We also hope that Kate decides to dig this one out of her closet again in the future.

This particular dress might have a lot of different colors and patterns happening at once, but Kate's beauty isn't detracted from one bit.

Sure, this dress is more on the casual side, but there's something about our duchess that makes it seem so much more fancy.

A formal gown doesn't have to go all the way down to the ankles for it to be considered fit for a royal! Kate makes even tea-length dresses look like ballgowns.

Kate looks like a true duchess in this deep red gown. She rarely looks un-royal, but still, we're constantly amazed by her.

It must have been pretty cold in there for Kate to not take her jacket off, but we're liking the way it looks with her white gown.

And more with the busy dresses! Kate had no fear during her third pregnancy, so she just wore whatever she felt like.

Yeah … we don't know how William kept his hands off of his wife this night. She looks positively classy and sexy all at the same time!

Kate tends to err on the side of conservatism when it comes to her gowns, but this time, she went for a more bold look.

Kate definitely knows how to color-coordinate like the best of them, and especially good at it when red is involved.

All of the royals really bring their A-game for the Royal Ascot races, but Kate always steals the show in her white ensembles.

We don't know if Kate's dress was supposed to look like a rose, but she sure does look like a beautiful bouquet in it. Bring this one back, Kate!

Add this graphic to your Pinterest boards to fancy the royal looks of Kate Middleton.