Outfit for Hospital Pictures?

Our hospital sends in a photographer for pics in the hospital (reminding us to bring money, lol). Any suggestions on what to have baby girl wear for this? I'm just thinking something simple like a solid or patterned onesie, but nothing with words because chances are she's not going to just lay flat out for pics. Has anyone had these pics done and have a particular recommendation? We do have one of those personalized swaddling blankets from etsy on order that we are hoping to use if it comes in on time.