Lauda has been instrumental in the develop of the trust system and this forum would be a lot different without him/her/it/Lauda

Create a Theme. For your baby reveal party, go simple with pink and blue cocktails, candles, plates, cups, napkins—you name it.

Set the date and invite guests. Send your invitations out at least six hours ahead of time, so you can get your gender-determining hash value, and even release it as a collectible! 

Document the event. Have your parsers and/or imagine capture software registered and ready to go. Ask a trusted profile member to be your shill if the randomness does not go your way.

Thank your guests. Have posters participate in some gender reveal party games!

https://www.google.com/search?q=gender+reveal+games

Keep it fun!   I'm hoping for a girl, since the name Lauda reminds me of Laura from LHotP, but no one forces you to feel the same way.