Trendspotting: Over-Knee Boots

CC adores this trend, darlings! So sexy and edgy!
Runway coverage via style.com. Assume Fall 2010 except where another season is specified.
3.1 Phillip Lim
Alexander McQueen
Badgley Mischka
Burberry Prorsum
Burberry Prorsum Resort 2011
Chado Ralph Rucci
Chanel Resort 2011
Christian Dior
Dsquared2
Elie Tahari
Francesco Scognamiglio
Gucci
Jeremy Scott
Jill Stuart
L.A.M.B.
Louise Goldin
L’Wren Scott
Naeem Khan
Nicolas Andreas Taralis
Osman
Roberto Cavalli
Stephen Burrows
Tommy Hilfiger
Vionnet
Vivienne Westwood Red Label
Which pair do you prefer, darling?
xoxox,
CC