In Search For Baby Shower Dress!

Ke
I'm looking for a dress for my spring baby shower.  I want something floor length because #HelloSwollenFeetAndAnkles! I'm having a girl so I feel like I should wear something pink, lavender, or white with feminine accessories.  I'm afraid of wearing florals and looking like I'm wearing my grandmother's curtains from the 70s.  I want to buy it in person, not online.  Thoughts? Suggestions?