What's this?
It's a dress
What's this?
It's a T-Shirt
What are these?
These are shorts
What are these?
These are trousers
What are these?
These are socks.
It's (her/his) dress.
her
It's (his/her) t-shirt
his
Those are (his/her) socks.
his
Those are (his/her) shorts.
his
Those are (his/her) trousers
her
