That model's hair looks nothing like Kate's. Kate's hair looks like she uses hot rollers to get that wave, unless she blows otherwise naturally wavy hair out with a round brush.

I've used jumbo size hot rollers myself for years on my stick straight hair. My hair looks more like Kate's than that model's. Save the money, buy some hot rollers instead. Better get ones with a high wattage, though, or it won't be hot enough to curl.

That's all very good, but how long do the curls LAST? Do they fall out easily? And how much damage is done to the hair compared to the damage of other chemical treatments?

Kate's hair looks flat and dull in the photo used here, and the model's hair looks frizzy. I wouldn't want my hair to look like either example.

I like having the ability of sporting pin-straight hair or if I want to look more glamorous, adding curls. With this, you're stuck with the wave, and if you want pin-straight hair, you risk damaging your already-processed hair more by having to add higher amounts of heat to your hair. It sounds like a bad idea. Save your hair and your money. Best to stick with rollers or braiding your hair while wet and then removing the braids for some wave. Take it from someone who had the Japanese hair treatment some years ago and ended up with hair very vulnerable to frizz (luckily, that was 3 years ago, it grew out and has mostly been cut off by now).

lol... chemical perm...hot rollers? chemicals are chemicals are chemicals ....!!! And I would not put chemicals into my hair for a hot minute.

Unless you count a good quality plain soap shampoo a chemical. Or if you count a strained fresh lemon juice diluted rinse a chemical. Or bottled water for the whole shampoo, were chemicals.

Now the heat roller is interesting. Intense heated rollers are just as bad for hair as the old fashioned perms... and our model certainly exemplifies messy over-curled hair.

I see nothing wrong with, after a healthy shampoo, putting medium curlers (non-heated and smoothly made) no more than half way up hair strands and fixed there with clips which are hair friendly.

But the real secret, for me anyway, is no hot hair dry. I suppose I am lucky; I earn my living as a free-lancer so my work can be done at home. So, simple air dry.

But, even when I went trotting down to a job, Saturdays were hair day, and all my tasks, and catching up on reading (yea, that lost art... reading a book or articles like this) and I always, all my life, let my hair air dry. Depending upon environment humidity, it would take, perhaps as little as four hours when humidity was low (like most of the Southwestern states), or high (Northwestern coastal states especially), which takes eight hours and sometimes more if I forget to take my hair down.

Lasting? You bet. I do not have natural curl to my hair... but 8 or so hours starting wet, and drying around a medium sized curler (not as big as the model's), gives me clean hair that does NOT separate into separate strands the way even Kate's does (and that is a downright messy look to me) with nice loose curls at the ends.

And healthy? I think so. And my hair shows it. A natural red with no dye (and natural hair will always have a subtle variety of colors in shades of the natural color... dyes don't do that). That's what gives natural hair its life.

The color variations probably caused or encouraged by the "chemicals" in the model's hair are too extreme. And the "curls"??? What a mess.

One last fact. My hair habits were taught to me by my mother, who is now 81 years old. I inherited my hair from her, I think. But... this might be persuasive. She, too, is a natural redhead... and today she is NOT remotely gray haired, beyond a gray streak coming out of her forehead on its right.... the rest of her hair is still its original color.

Think about it. Eight-one years old and not gray-haired! Takes years off her age just looking at her (she never smoked nor drink more than an occasional glass of wine, lol and always wore a sun hat! so her skin is not wrinkled much more than mine). I think if you met us both she would look like a slightly older sister to me. And she had me, her only child, when she was 38 years old.

Don't tell on me...

For hair that doesn't like to stay curly or waved, I found that hot steam rollers work best - and no chemicals.

Roll up clean dry hair as desired, let set, then remove rollers and allow hair to cool off a bit before fluffing it out with fingers or a brush. Give it a light spray of unscented hair spray and you're good for the day.

Hot steam rollers also work well on color-treated hair (or with highlights, as I prefer to call them) and don't further dry out or frizz your hair. For any details on bangs or at the crown, you can use a curling iron.

I bet she just uses sponge curlers.

Her hair looks like she used rollers or a curling iron. What's the big deal? I know its popular right now, but I think this look is corny and girlie, and for women under 40 and that's stretching it.

I do like the model's hair, tho. Its nothing like Kate's but its gorgeous but its "going out" hair. Not everyday up early and go to work hair. Unless you're a hair model.

I guess I got lucky...my hair has natural waves and holds a curl very well.

Even if it didn't, I would NEVER pay $400 for a haircut/style!

That being said, Duchess Catherine looks beautiful!