The tricky bit is knowing if they're telling the truth about their age.
Didn't Ando Aika fess up to being just a little older than she had previously admitted.
They're in a tough business; it must be a temptation to knock off a couple of years.
According to Wikipedia, Yuria is 30 in December...but, damn, she looks fine! She's got a butt you could bounce pennies off

In a video on Youtube, she drinks a 'Yuria Special' (Red Bull and whiskey). Just in case you ever have to buy her a drink.
On the subject of short hair, I was a bit dubious about Risa Kasumi's short hair, but I've changed my mind. She looks great.
I think short hair suits Yuma, too.