Princess Kate's family glowed with pride as they arrived at Westminster Abbey for King Charles's historic Coronation.
Carole and Michael Middleton arrived together with the Princess of Wales' sister, Pippa, 39, and her brother, James, 36, to show their support to the new monarch.
And fans went wild for Carole's sapphire-coloured dress and headpiece, with many praising her "elegant look". One social media user commented: "Carole Middleton really [shows] where Catherine's exquisite charm comes from."
In agreement, another user added: "Carole and her husband did an excellent job raising the future Queen."
Looking equally glamorous, Pippa arrived in a stunning yellow dress with a matching fascinator, while her brother wore a complementing yellow waistcoat.
"Pippa Middleton did well - It looks elegant," said one impressed viewer.
Another user said: "A moment for Pippa Middleton's look. I haven't seen any better pictures, but she is stunning."
However, Kate's outfit shocked viewers as she arrived in a blue, red and white formal robe over an Alexander McQueen dress.
The robe was worn at the request of King Charles and Queen Camilla, while Kate used her go-to designer McQueen for her gown, with the flowers representing the four home nations.
Instead of wearing a tiara, Kate opted for a Jess Collett x Alexander McQueen Headpiece.
Her daughter Princess Charlotte mirrored her mother, also wearing an Alexander McQueen dress and a Jess Collett x Alexander McQueen Headpiece.
Commenting on their outfits, one user said: "Mummy and me tiaras for Kate and Charlotte."
Another user added: "Kate is slaying."
A third user said: "Princess of Wales, Kate, looks magnificent."
