Gwyneth Paltrow Officiates Matthew Lowe's Santa Barbara Wedding

Gwyneth Paltrow officiated the wedding of Matthew Lowe, the eldest son of actor Rob Lowe and his wife, Sheryl Berkoff, and Emily Markus on October 10 in Santa Barbara, California. The ceremony brought together longtime friends and Hollywood celebrities, with Paltrow taking a central role in the couple's outdoor vows.

According to photos shared by Page Six, Paltrow wore a long-sleeved white silk column gown featuring colorful floral patterns, a plunging backless design and a matching wide belt. She attended the celebration with her husband, Brad Falchuk, pairing the dress with metallic gold strappy heels and wearing her platinum blonde hair in middle-parted waves.

Paltrow's outfit featured a predominantly white bridal-style silhouette, accented by vivid flowers. The ceremony took place beneath a wedding arch decorated with white fabric and greenery.

The actress has been friends with Rob Lowe since her teenage years, marking more than 35 years of friendship through her role in the ceremony. Paltrow previously spoke at Lowe's Hollywood Walk of Fame ceremony in 2015.

Other celebrities attending the wedding included Cameron Diaz, Katy Perry, Zoe Saldaña and Chris Pratt. Markus wore a white strapless gown with a sweetheart neckline and a sheer floral overlay on the skirt, complemented by a white tulle veil over her long blonde curls.

The celebration also marked a significant family gathering following the death of Rob Lowe's niece, Fiona Lowe, on September 29. Fiona, 13, was the middle daughter of Chad Lowe and his wife, Kim Painter, who also have two daughters, Mabel, 17, and Nixie, 10.

Chad Lowe and Painter attended the wedding, marking their first public appearance since their daughter's death. The family had previously announced the loss in a statement shared with People, remembering Fiona as a beloved member of their family.

In the statement, the family described Fiona's personality and interests while expressing their grief over her death.

"We are deeply heartbroken by the loss of our beloved Fiona," the Lowe family said in a statement shared with People.

The statement also remembered the teenager for her creativity, intelligence and love of dancing, emphasizing the close relationships she shared with her parents and sisters.

"a loving young girl who was smart, creative, and loved to dance. She was adored by her sisters and she was deeply loved by her parents. In fact, she was the light of our lives." the family said.

The family also addressed the impact of Fiona's death and requested privacy as they grieved.

"Her passing is devastating for our entire family, and we ask for prayers and privacy at this time," the Lowe family said in the statement.

The statement included information about mental health support, directing people experiencing difficulties or concerned about someone else to the 988 Suicide & Crisis Lifeline by calling or texting 988.