Mom's 50th surprise birthday party

[alwaysnewproject]

So my mom's 50th birthday party my siblings and I are planning a surprise party. We are looking at doing a 1950's theme with 1950's Barbie vibe.

Any ideas? Cake is covered but food I am not too sure of or music and decorations. I want to have an easil set up with a poster with the Barbie sillhoutte and in Barbie font her name and then have everyone sign it. I am thinking too for food to be appetizers and have them on a table. My dad's in charge of flowers. He is getting cherry blossoms (my mom's nickname-pet name from my nana/her mom) to put on the tables. The cake is going to be pink with chocolate cherry branches covering it with 50 cherry blossoms on top of the cake (instead of having 50 candles). Pink is kinda' a theme too.  Any ideas?