Sexing 12 week old Wyandottes

[Bears6568]

I posted 7 weeks ago (At 5 weeks old) regarding the sex of my Silver and Gold Laced Wyandottes. I got mixed reviews with most saying repost when they are older so here they are. Thanks in advance for any help anyone can give, these are the first chicken I've had with Rose Combs

 

[RoostersAreAwesome]

Pullets

 

[Leahs Coop]

X2 pullets. Very pretty flock!