Time for baby shower?

👶🏽👶🏽👦🏽👩🏼👨🏽 • Wife and mother of a two year old boy! And expecting twin boys Aug 2015
I just wanted past experiences from others, and opinions with a twin pregnancy, when is the best time to have the baby shower when pregnant with twins.? So far everything is good and healthy,babies weighing last week 10/11 oz.  I'm currently 20 weeks. I'm on the heavy side of pregnancy weighing 247lbs. Pre pregnancy weight was 249lbs. What are your opinions ladies? :}