Littlies are children under the age of twelve.
From birth to age eleven, littlies live with their middle-Pretty parents in the city suburbs. Littlies go to elementary school with other kids their age where there's a ratio of one teacher to every ten students. They maintain strong relationships with their parents, the only stage of life where such traditional family ties are considered appropriate. Since middle-Pretties are encouraged to have only one child per decade, they rarely form strong sibling relationships. They are discouraged from playing in the Greenbelt, where Uglies usually go to hoverboard, play sports, and pull tricks.
When littlies turn twelve years old, they are officially considered Uglies and move away from their parents to the dorms of Uglyville, where they await the Pretty Operation on their sixteenth birthdays.