Queen Elizabeth II, who continues her reign over the U.K., entered the world on April 21, 1926, born in London to Queen Elizabeth The Queen Mother (formerly Lady Elizabeth Bowes-Lyon) and King George VI, whose throne she would inherit in 1952.
Prince Charles and Princess Anne
Behold! Britain's Prince Phillip and Queen Elizabeth II, with their eldest, Prince Charles, and only daughter, Princess Anne. Charles was born in Buckingham Palace and is first in line for the throne.
Prince William and Prince Harry
When Prince Charles and Princess Diana welcomed their two sons, it was a world event. Prince William arrived June 21, 1982, and the ginger-haired Prince Harry followed on Sept. 15, 1984.
Princess Eugenie and Princess Beatrice
The U.K.'s Princess Eugenie and Princess Beatrice are the children of Prince Andrew and ex-Duchess of York Sarah Ferguson. They are the sixth and fifth in line for the throne, respectively, and Beatrice is perhaps most famous on the Internet for the hat she wore when cousin William married Kate Middleton.
Sweden's cherub-faced PrincessEstelle, born Feb. 23, 2012, is the only child of Crown Princess Victoria and Prince Daniel, a former personal trainer. They married June 19, 2010.
The Kennedy Kids
The American equivalent of royalty, PresidentJohn F. Kennedy, First LadyJackie and their children, John Jr., and Caroline, captured the country's attention. Here's Jackie with John-John, who was born Nov. 25, 1960, 16 days after his father was elected to the presidency.
Jordan's Prince Hamzah, now 33, is the son of the late King Hussein of Jordan and his U.S.-born fourth wife, Queen Noor al-Hussein. The pair had three more children: Prince Hashim (32); Princess Iman (30); and Princess Raiyah (27).
Prince Hussein and Princess Iman
Jordan's Crown PrinceHussein (now 19) and PrincessIman (16) are the children of King Abdullah II and Queen Rania, who have two other children, 12-year-old Salma and 8-year-old Hashem.
Princess Caroline and Prince Albert
Monaco's Princess Caroline and Prince Albert are the two eldest children of Hollywood actress-turned-royalty Grace Kelly and Rainer III, Prince of Monaco. Their younger sibling is Princess Stephanie.
Rainier III, Prince of Monaco, and wife Princess Grace welcomed their third child, Princess Stephanie, on Feb. 1, 1965.
The Earth stopped rotating on its axis -- OK, we exaggerate -- when baby Blue Ivy, daughter of music royalty Beyonce and Jay-Z, arrived on the scene on Jan. 7, 2012.
James, Viscount Severn
Since Princes William and Harry get all the attention, you might not be aware that the U.K.'s Viscount Severn, also known as "James," is the 5-year-old son of Queen Elizabeth's fourth child, Prince Edward, and his wife Sophie. The couple's title: Earl and Countess of Wessex.
Jordan's Queen Rania, who ascended the throne when she married King Abdullah II in 1999, sits here with their fourth child, Prince Hashem, born Jan. 30, 2005. They are also the parents of Crown Prince Hussein (19); Princess Iman (16); and Princess Salma (12).
Michael Jackson's 'Prince'-ly Brood
The late singer, famous for his bizarre public behavior and parenting style as well as for his groundbreaking music, was father to daughter Paris and two sons namedPrince-- Michael Joseph Jackson Jr., who arrived in 1997 via bio-mom Debbie Rowe and now goes by his regal nickname, and Prince Michael Jackson II, born Feb. 21, 2002 to a surrogate. The King of Pop dubbed the child "Blanket."