Simple Christening romper for baby girls Baptism. This fine Christening bubble is a special little outfit for infant girls. This Christening bubble romper snaps for easy changes and has hand embroidered detailing along the bodice and light lace detailing. This slightly starched poly cotton outfit lends itself t a bit of a formal look in all white. Christening romper for girls is made by Feltman Brothers, and runs just a smidge short.