Baby shower 😩 - number of guest

Courtney • 23. 1st time Mommy. Awaiting JT 👶🏽🎀 5/15/16
Planning the baby  shower , I sent out invitations last week , only about 5 people RSVPd ( but I did ask them to RSVP by March 15th, shower is April 2nd ) 
My question is , what's a good number of guests , that would be considered a "good" baby shower turn out ?