Need Help Sexing 3 Kittens

Hi everyone. My rescued semi-stray cat had 3 kittens 18 days ago, and I'm still not sure of their sexes.

This is the only one I've named so far, because I wasn't sure if I was keeping or rehoming the others. This is Sweep and he likes to sleep:


And here's a rear shot of Sweep, and I always thought he was a boy:


Here's kitten 2:


And a rear shot of kitten 2:


Kitten 3:


Kitten 3 rear:


Thanks in advance for any help!

Kitten 3 is hard to tell, the rear shot is blurry.

I think kitten two is a boy.

Sweep is a girl . And wow, she's a chubnik!

Kitten 2 is a boy, kitten 3 is a girl.

You got 2 girl kittens (1 and 3) and 1 boy (kitten 2)

Thanks for all your replies!

When they were first born I felt really sure about their sexes, then the past couple of days began to have my doubts. Now you've cleared it all up for me! I hate it when you think you know the sex of an animal and then find our you're wrong and then keep getting all your he's and she's mixed up!

Oh, and Sweep IS a chubnik! Actually, they're all really big. Way bigger than the average you find on kitten weight charts. They're only 2 and a half weeks and all are already way over 300 grams!

I absolutely agree that #2 is male and #3 is female, but I'm actually seeing male for Sweep. Can you post another picture?

I agree EB..Sweep is what I like to call a he/she.

Could be a he..could be a she. Only time will tell. But my guess is...a boy.
 

I have a girl that looks just like Sweep in the back. . .I thought she was a boy until she was old enough that a couple things were missing . So I do think it's a little ambiguous. But I feel like there isn't enough distance between the anus and genital opening to be a boy.

Yeah, Sweep is a girl.

I say girl, boy, girl.