Whatsapp create your username now Available 

WhatsApp now Allowers users to create their own username 

Restrictions:

• Cannot start with a "www."

• Cannot end with a domain (.com, etc.) or a period

• At least 1 letter

• Only lowercase letters, numbers, periods and underscores.

• 3-35 characters

WhatsApp will also offer an optional “username key,” which is a 4-digit code needed to send messages to a new username. Check WhatsApp > Settings > Profile if the update is available for you.

via - ATT