Like a lot of its customers, Carter's is having a growth spurt. After going through a tough stretch in 2011 amid soaring product costs, the seller of babies' and children's clothes has made an impressive comeback. Earnings growth bounced to double-digit levels the past two quarters following several quarters of declines. Watchers expect Carter's (CRI) to keep up the pace when it reports fourth-quarter results in coming weeks. Analysts polled by