"Astrologers describe Sagittarius as a sign of expansion, and these people tend to do things in a big way — which includes having a big family," Alexander says. Since they're so zestful for life, having kids to enjoy the experiences with is important, so they'll probably want three or four kids, if they can! "Fond of travelling, Sagittarian parents start taking their kids on trips at an early age to show them the world and expand their horizons," she says. "Family outings are a big deal for these active folks."