For weeks after baby’s arrival it’s a juggling act on top of sleepless nights. The idea of throwing a party couldn’t be further from the mind. A Sip and See is the 21st century’s take on celebrating the arrival of a newborn. It’s an emerging trend that flies in the face of all that downcast exhaustion. The Sip and See is a large, glittery affair, involving a specialty cake, fancy hors d’oeuvres, champagne, and considerable …