Georgetown Cupcake) Sophie LaMontagne threw her a baby shower in November. Everyone at the event, including Katherine, learned she'd be having a girl at the same time when they bit into cupcakes ...

The star, who recently opened an LA branch of Georgetown Cupcake ... EXCLUSIVE: DC Cupcakes star Katherine Kallinis is having a baby girl! This is the first child for the happy couple.

D.C.-based Georgetown Cupcake creates about 100 cupcake varieties ... and the sex of Berman's baby girl was announced by way of specially colored cupcakes. They changed their majors.

They left behind their stable careers for cupcakes. — -- Georgetown Cupcake founders and sisters Sophie Kallinis LaMontagne and Katherine Kallinis Berman opened their first brick-and-mortar ...