Prince William, Kate Middleton and Prince Harry reunited to lead the tributes and memorials to the victims of the Grenfell Tower fire tragedy.

On Thursday, the royal trio along with Prince Charles attended the memorial service at St. Paul's Cathedral in London. The gathering aimed to honor the 71 people who died in the fire tragedy in Grenfell Tower in June, People reported.

The ceremony was designed to show solidarity for the bereaved and survivors. At the same time, the ceremony recognized and thanked everyone who assisted during the blaze and who extended help for the recovery efforts.

The Duchess of Cambridge, 35, donned a navy hat and dark coat for the event. She arrived with Prince William, 35, and Prince Harry, 33. After a short while Prince Charles, 69, arrived with his wife, Camilla Parker-Bowles.

Aside from the royals, Grammy-winning singer Adele was also in attendance. She wore a dark top and jacket for the memorial. 

The "Hello" singer has been active in supporting the victims and rescue workers. In fact, she raised money for them through her Wembley Stadium performances in the summer by encouraging the attendees to donate to her Grenfell Tower fund.

The memorial marked the six-month anniversary of the Grenfell Tower tragedy. It has been called by the member of Parliament as a "day of national mourning."

"It was lovely to have the support for the royal family for the day," Jane Gang, 57, told the publication. "Harry and William obviously had to go through a massive amount of emotions when their mother died at such a tender age, so it was very moving to see them in the Cathedral. There were lots of graceful moments and it was the royals who kept their regal presence when they came through the crowd and everyone in the Cathedral really appreciated that."

Days before the memorial service, Middleton attended the Christmas party for Grenfell Tower victims without Prince William and Prince Harry. The Duchess of Cambridge arrived with her signature "Chelsea Blow Dry" hair.

Middleton gave presents to the children. She also met a group of young people and even participated in their music workshop.

What can you say about the royals' efforts in helping the Grenfell Tower fire tragedy victims? Drop a comment below.