Instead, he thinks it was too much for Beatrice and someone like the late Isabella Blow could've done it justice.
The designer told Bergdorf Goodman's blog: "I'll probably get in trouble for saying this, but at the royal wedding, one of the princesses wore a now-very-famous (or infamous), Philip Treacy hat - that hat wore her.
"Now, Isabella Blow, a woman those of us in fashion knew well - had she worn the same hat, it would have looked great. She would have worn the hat. She knew what she was about, what she wanted to express in fashion."
In May, the outlandish headpiece - which had been likened to a pretzel and a cat flap - sold for $131 000 to an unnamed person on auction website eBay.
Beatrice admitted she was "amazed" by the comments her headwear attracted but said she was pleased to raise funds for children's charities Unicef and Children in Crisis by auctioning it.
In a statement on eBay she said: "I've been amazed by the amount of attention the hat has attracted.
"It's a wonderful opportunity to raise as much money as possible for two fantastic charities. I hope whoever wins the auction has as much fun with the hat as I have."
24.com publishes all comments posted on articles provided that they adhere to our Comments Policy. Should you wish to report a comment for editorial review, please do so by clicking the 'Report Comment' button to the right of each comment.
James Franco's ex-manager Miles Levy is being sued by his former business partners for allegedly stealing commissions from the actor for eight years. Read More »
Kris Jenner is doing "really well" after being hospitalised earlier this week for "internal pains". Read More »
20 new pics of Kate and William.
6 best pics from the royal tour!
Check out these pics of Prince George!
10 pics from Will and Kate's visit.
Kate and Will wows the crowd!
Will and Kate hanging out with Peter Jackson.
10 photos of adorable Prince George!
The royals arriving in New Zealand!
South AfricaCity PressMarket Related
South AfricaCommunicate Cape Town ITR24000 - R27000
HousesR 2 150 000
HousesR 2 100 000
HousesR 1 895 000