Celebrity Best Hats of the Royal Wedding Flowers! Swirls! Tulle! Oh my! Guests and family alike break out their most fascinating fascinators and over-the-top trilbys for the big day By Melissa Liebling-goldberg Published on April 29, 2011 06:00 AM Share Tweet Pin Email Trending Videos 01 of 27 PRINCESS EUGENIE AND PRINCESS BEATRICE Pascal Le Segretain/Getty The groom's royal cousins make for a dashing duo in their Philip Treacy hats. Eugenie sets off her bold blue floral Vivienne Westwood suit with an equally electric hat with feathers and flowers, while Beatrice accents her red locks with a sculptural blush topper to match her Valentino coat. 02 of 27 ZARA PHILLIPS Chris Jackson/Getty The next royal to get married stands out in an intricate black Philip Treacy hat, paired with a periwinkle look by Paul Costelloe. 03 of 27 QUEEN ELIZABETH II Peter Macdiarmid/Getty The grandmother of the groom – and England's reigning monarch – shows her sunny side in an all-yellow design by her personal assistant Angela Kelly. 04 of 27 THE SPENCERS Getty Prince William's cousins – Amelia, Eliza and Kitty – form a perfect picture with their identical blonde locks and whimsical fascinators. 05 of 27 DUCHESS OF CORNWALL Pascal Le Segretain/Getty The stepmother of the groom complements her Anna Valentine champagne dress and two-tone coat with an airy Philip Treacy hat, one of up to 100 he's made for guests at the ceremony and parties. 06 of 27 PRINCESS MATHILDE OF BELGIUM Tim Rooke/Rex/Rex USA The wife of the heir to the Belgian throne is terrific in teal, including her structured Philip Treacy hat. 07 of 27 JOSS STONE Xposure The singer leaves her hippie chic style behind, picking a classic wide-brim hat with embellishments to match her red sheath and cropped jacket. 08 of 27 PRINCESS LETIZIA Bauer-Griffin The Spanish princess is a vision in pink, down to her tulle-topped hat. 09 of 27 VICTORIA BECKHAM AND DAVID BECKHAM PA/Landov The expectant star designer matches a swingy navy dress from her own collection to a dramatic floral Philip Treacy fascinator. Her handsome husband is by her side in a traditional top hat, also from Treacy, paired with his Ralph Lauren suit and Order of the British Empire. 10 of 27 PRINCESS ANNE Dan Kitwood/Getty The younger sister of Prince Charles blooms in a purple topper with netting and a large flower, matching her floral coat and violet dress. 11 of 27 PRINCESS MICHAEL OF KENT Pascal Le Segretain/Getty Accompanying her husband Prince Michael of Kent, the royal family member adds a swath of teal organza to her white hat. 12 of 27 PRINCESS MARIE-CHANTAL OF GREECE Retna The fixture on international best-dressed lists proves her fashion mettle with a pewter Philip Treacy hat with sprays of roses. 13 of 27 QUEEN SOFIA Dan Kitwood/Getty The Spanish monarch is a vision in violet, from her silk suit to her netting fascinator. 14 of 27 JUSTINE THORNTON Chris Jackson/Getty The barrister picks regal purple for her sheer, layered hat while exiting the wedding with longtime partner, Labour Party leader Ed Miliband. 15 of 27 LORNA BROOKING Landov Arriving on the arm of her former footballer husband Trevor, Brooking goes for layers of textured purple. 16 of 27 QUEEN MARGRETHE II OF DENMARK Chris Jackson/Getty The Danish monarch picks head-to-toe aqua, including her feather spiral-topped chapeau. 17 of 27 LADY FREDERICK WINDSOR Chris Jackson/Getty Born Sophie Winkleman, the daughter-in-law of the Duke and Duchess of Kent, is in the navy in her diamond-patterned suit and sculpted straw hat with festive twirls. 18 of 27 SOPHIE, COUNTESS OF WESSEX Chris Jackson/Getty Prince Edward's wife stayed neutral in a beige Bruce Oldfield dress and coat with a rosette spray from Jane Taylor perched on the side of her blonde hair. 19 of 27 PRINCESS VICTORIA Chris Jackson/Getty The Swedish princess is a bright spot in her coral wrap dress and matching wide brim straw hat. 20 of 27 SANTA MONTEFIORE AND TARA PALMER-TOMKINSON Pascal Le Segretain/Getty The stylish sisters make quite a striking photo as they enter Westminster Abbey. Palmer-Tomkinson is a vision in blue, topping her Deborah Milner off-the-shoulder dress and matching Nicholas Kirkwood shoes with a rosette-topped fascinator by Philip Treacy, while her sister matches her multi-color Stephen Jones fascinator to her purple sheath dress and fur stole. 21 of 27 CHELSY DAVY Pacific Coast News Prince Harry's date tops her custom Alberta Ferretti suit with a beige netting-topped fascinator. 22 of 27 CAROLE MIDDLETON Pascal Le Segretain/Getty The mother of the bride adds something blue in her sky blue silk dress and matching passementerie coat by Catherine Walker (one of Princess Diana's favorites), paired with a matching hat by Berkshire based milliner Jane Corbett. 23 of 27 MIRIAM GONZALEZ Pascal Le Segretain/Getty Accompanying her husband, Deputy Prime Minister Nick Clegg, the Spanish beauty adds a touch of flair to her black netted suit with a spray of red roses. 24 of 27 SALLY BERCOW Chris Jackson/Getty The wife of the House of Commons Speaker John Bercow adds a dash of whimsy to her black lace sheath with a feathered fascinator. 25 of 27 FRANCES OSBORNE Pascal Le Segretain/Getty The wife of the Chancellor of the Exchequer George Osborne plays off her filmy gray dress with an elaborate swoop of feathers. 26 of 27 DUCHESS OF KENT Chris Jackson/Getty The wife of Prince Edward, Duke of Kent, accents her Catherine Walker pink dress with a feather-bedecked fascinator from Philip Treacy. 27 of 27 CLAUDIA BRADBY Retna Hand in hand with her husband, journalist Tom Bradby, Claudia achieves great heights with her swooping, plumed topper by Jane Marcantonio.