Kate Middleton and her younger sister Pippa attended their friend's wedding ceremony on Saturday in Wilton, Wiltshire in England, accompanied by Prince William and Pippa's boyfriend Alex Loudon.

Kate dazzled the nuptial by appearing in a red lace knee-length dress designed by Collette Dinnigan and wore a matching fascinator and sexy Prada platform pumps.

In order to prepare for her friend's nuptial, Kate spent 4 hours in her favorite hair salon on Friday afternoon. The service included coloring Kate's hair with organic vegetable-based hair dye, trims and treatments.

Kate usually spends time and socializes with people in the salon for eight years. And, even after she became a royal princess, she still continues to come to the salon once every two months.

An insider told US Magazine, “She loves her time there and she has known everyone there for years so it's really relaxing for her.

Her family, including her mother Carol Middleton and Kate's little sister Pippa Middleton, have been trusting the hair salon for several years.

Pippa, who looked happy with Alex at her side, chose a grey-and-white floral-printed frock and black fascinator for the ceremony. No wonder, the rumors about their impending wedding have gone viral on the Internet.

“They are very much an item and Pip tends to stay at his place on a Wednesday, Thursday and often Friday night,” a friend of the Middleton family said in a report.

Moreover, Alex also has impressed Pippa’s family and friends. “William, Kate and Pippa’s parents adore Alex. They trust him and see him as one of the family. They’d be very happy if he slipped a ring on Pippa’s finger,” a source revealed.

The designer Alice Temperley, who designed the wedding dress for Kate, is ready to design wedding dress for Pippa. “I’d love to dress Pippa for her wedding when it happens,” Temperley said. “She’s so beautiful – she’s perfect, and her bum is perfect – it would be such an honor.”

Temperley has dressed all the women in the Middleton family, including Kate, Pippa and their mother Carol Middleton. Both her ability to create stunning gowns and keep secrets have impressed the Middleton family.