Kates extensions debate is based on the assumption that extensions are very visible.
Because we've all seen the very cheap ones/ones that are growing out.
There aren't the ones that Kate will be using. She'll be using the top top end ones, the same as most of the red carpet stars wear. She'll also be having the kind of maintenance schedule on them that must be very very frequent and lovely blow-dries every time she needs to step outside her front door.
Is kinda of her job to look immaculate. Remember all the shit Fergie got for basically being a bit messy looking (like most of us!)?
So Kate needs to do what is expected of her and look immaculately turned out and give the papers what they want. A slim, smiling woman with good posture, teeth, hair and skin. She does it very well (she's not doing it for me because I don't give a shit and want the RF gone, but she has her fans and good for her).
Is the same as fake tits, everyone says they can spot them a mile away, yes when they are like Jordan's of Posh Spices, but there must be millions of women that have had them done and you would never know.