Р192
РОДИТЬСЯ В РУБАШКЕ (В СОРОЧКЕ) coll.
occas. humorVPsubj:
humanusu. past) to be lucky
X родился в рубашке - X was born under a lucky star
X was born lucky.
Cf. have the luck of the Irish.
According to popular belief a baby born with a caul («в рубашке», «в сорочке») will succeed in everything he or she does.