My (14 month old) Matilda gets a variety - when I was pregnant I was sure she was only going to be Tilda!
Mostly she's Matilda.
When she's being naughty, she's Matilda Elizabeth.
When she's being a whirlwind, she's my little Tildabeest.
When we're talking about her body, we have Tilly's toes and tummy but Matilda's mouth!
She also gets Tilly-Beth, Tills, the cats' names, Squeaks and Sodlet.
The one name she doesn't get very much is Tilda.