Oprah Winfrey sported a wide-brim hat, and Amal Clooney wore a mustard-colored Stella McCartney dress with a matching fascinator.
In this picture, British singer and fashion designer Victoria Beckham wears a navy blue fascinator.
Click through this gallery for a look at some of the styles seen Saturday at the royal wedding.
Oprah Winfrey arrives for the the royal wedding in a light pink Stella McCartney dress and brimmed hat.
U.S. tennis player Serena Williams and her husband Alexis Ohanian arrive for the royal wedding. Williams wore a pink cocktail fascinator the same color as her dress -- a theme many women followed at the royal wedding.
Amal Clooney wears a mustard-colored Stella McCartney dress with a matching fascinator. The international human rights lawyer attended the royal wedding with her husband, American actor George Clooney.
Queen Elizabeth II
Queen Elizabeth II smiles after the wedding of her grandson, Prince Harry, to Meghan Markle. The queen wore a green outfit and matching hat with a purple feather. As is customary, she was the last to arrive at St. George's Chapel for the ceremony, just before the bride's arrival.
Abigail Spencer and Priyanka Chopra
Abigail Spencer (L) and Priyanka Chopra attend the wedding of Prince Harry to Meghan Markle. Chopra wore a lilac dress and matching fascinator, while Markle's "Suits" co-star, Spencer, wore a blue polkadot dress and matching fascinator.
Peter Phillips, the oldest grandchild of Queen Elizabeth II, and his wife, Autumn Phillips, arrive for the wedding ceremony of Prince Harry and Meghan Markle. Autumn Philips wore a blue fascinator that had peacock-like feathers on it.
Princess Beatrice, Prince Harry's cousin, attends the royal wedding. Beatrice wore an understated fascinator, very different from the one she wore to Prince William and Duchess Kate's 2011 wedding.
Princess Eugenie arrives at the royal wedding with her father, Prince Andrew, Duke of York. Princess Eugenie, Prince Harry's cousin, wore a pillbox hat. She wore a much more elaborate hat for Prince William and Duchess Kate's 2011 wedding.
British singer-songwriter Joss Stone (R) arrives for the wedding ceremony of Prince Harry and Meghan Markle. Stone wore a feathery cocktail fascinator.
Camilla, Duchess of Cornwall
Britain's Prince Charles, Prince of Wales and Britain's Camilla, Duchess of Cornwall arrive for the royal wedding. Camilla wore an elaborate fascinator with pink ruffles covering a wide brim.
Camilla, Duchess of Cornwall and Catherine, Duchess of Cambridge wait in the chapel ahead of the wedding ceremony. Duchess Kate wore a primrose yellow wool silk tailored coat by the house of Alexander McQueen and large hat with a flower tucked under the brim on one side.
Pippa Middleton, Duchess Kate's sister, arrives in St. George's Chapel at Windsor Castle for the wedding of Prince Harry and Meghan Markle in Windsor.
Chelsy Davy, Prince Harry's ex-girlfriend, (C) arrives for the royal wedding. Davy wore a feather fascinator and matching navy blue dress.
James Corden and his wife, Julia Carey, leave St. George's Chapel at Windsor Castle after the wedding of Meghan Markle and Prince Harry. Carey wore a small light pink fascinator to match her dress.