The Duke and Duchess of Lugo (Infanta Elena and then-husband Jaime de Marichalar) and the Duke and Duchess of Palma de Mallorca (Infanta Cristina and husband Iñaki Urdangarin) attended the wedding of the Prince and Princess of Asturias.
The sisters of the groom were immediate standouts among the guests at the 2004 Spanish royal wedding, both making interesting choices that paid off well.
Infanta Elena underwent a style transformation during her relationship with her now ex-husband, whose own interest in fashion spilled over to her. She was prone to wearing some of the world's best designers, and the outfit she selected for her brother's wedding came from one of her favorites, Christian Lacroix. Lacroix was also behind the tent-like fuchsia coat Elena sported to the Danish wedding one week before this appearance, but this embellished ensemble has a bit more universal appeal. The coral dress and jacket share an old Spanish influence that make them the perfect match for her dramatic mantilla.
Infanta Cristina's outfit was a creation of Spanish design. Jesús del Pozo was a favorite of Cristina's and also created the outfit she wore to the Danish wedding. That ensemble was an interesting combination of red and green and the unique color choices continued with a pearl gray guipure lace coat over a satin dress in a gold, nearly olive, color. She topped it with a dramatic wide-brimmed hat from Mabel Sanz. The whole effect is both striking and understated, thanks to the muted color scheme, not to mention incredibly chic. This would certainly make a list of Cristina's greatest hits in my book, and as much as I love Elena's outfit for its Spanish inspiration, Cristina's is always the one I remember first.