Late Queen’s beloved niece Lady Sarah Chatto is elegant in blue as she joins Princess Anne at Ascot

Princess Margaret’s daughter, Lady Sarah Chatto looked regal as she attended the third day of the Royal Ascot in a bold indigo blue ensemble today. Sarah, who is famed for her sweet, unassuming nature, appeared in a sophisticated dress at the races in Berkshire today.

Sarah, 60, a favorite of the late Queen Elizabeth, was the only daughter of the glamorous Princess Margaret and Antony Armstrong-Jones, and is the half sister to David Armstrong-Jones. Sarah wore a high-necked blue dress with short sleeves in a dark blue shade, accessorizing the ensemble with a large sun hat of the same color.

She appeared make-up free for the event, wearing subtle jewellery such as a silver chain bracelet and small earrings that appeared to be in the shape of a snowflake. The 60-year-old arrived for the third day of the annual races alongside Princess Anne, who wore a smart blue-silver suit and a floral adorned hat in matching colors.

The royal, who is married to the artist, Daniel Chatto, is one of the more low-key members of the Royal Family. Sarah and Daniel share two children, Samuel Chatto, 27, and Arthur Chatto, 25, who currently serves as a marine – both have a long list of Instagram followers after being named as some of the royals best looking youngsters.

Sarah is not a working royal but is regularly seen at family events. Lady Sarah Chatto was born in 1964 — the last royal baby born at a palace rather than a hospital — within weeks of cousins Prince Edward, Lady Helen Windsor and James Ogilvy.