Bridle for Showing Yearling?

Question to Claire:
“Hi, I have a yearling filly, born august 2018. I am planning doing a couple of local shows with her in hand at the end of the season.

She is small for her age and I was just wondering what bridle I should use with her? ive been told to show her in a bit, is that correct? She is a lightweight hunter type, Dam was a tb x cob and sire was a cob”

Answer from Claire Oliver:
“We suggest you show your filly in a rubber snaffle bit.”