Failed.
Lousy advice.
I want to give her the surprise element.

Oh yes dear, I'm probably buying her dinner too.. =D
Then next time I try to see how big her hand is loh.
It's not lousy advice - I have three bangles, all purchased
without my presence, and they all don't fit.
They're all too small, my dad has underestimated his daughter's
hand... it's actually fatter than he thinks it is... 