Lady Amelia Windsor, 23, is a cousin of Prince Harry and Prince William.
She is 38th in line to the British throne currently, and is the granddaughter of the Queen’s first cousin, the Duke of Kent.
She was most recently seen attending a fashion party in London, at a club loved by the royals.
Lady Amelia attended the LOVE Magazine 10th birthday party with Perrier-Jouet at Loulou’s on 17 September.
The royal wore a black slip dress with a ditzy blue floral print and lace on the bust and hem.
The dress, by Michael Kors Collection, cost a whopping £6,285.
She added sandals and eschewed a coat, despite the colder weather. Her long blonde hair was typically dishevelled.
Love Magazine is famous for having featured a naked Beth Ditto on the cover in 2009.
Other cover stars include Cher, Madonna, Kate Midd, Justin Bieber, Miley Cyrus and Minnie Mouse.
LouLou’s is a private members club, which has welcomed many royals.
The club at 5 Hertford Street was reported by the Evening Standard in 2013 to be a regular haunt of Kate Middleton and Prince William.
Sarah Ferguson was seen leaving LouLou’s in July.
She wore a pink jacket and a pair of unusual £200 shoes.
LouLou’s plays host to a number of celebrities.
Regular guests include Mick Jagger, Kate Moss and Sarah Ferguson’s daughter’s Princess Beatrice and Eugenie.
The lavish club has a drawing room, nightclub and a restaurant and if you want to enter you have to be a member or signed in by one.
Lady Amelia Windsor recently sat front row at Mary Katrantzou’s LFW show.
Once dubbed the world’s most beautiful royal, she wore a bright pink Mary Katrantzou dress costing £1,890.
The off-the-shoulder outfit featured ruffles and fringing along the bust and hem.
It also sported a white floral motif down the side of the gown.