Sources: Wikipedia/Sodacan/Yorick
Sources: Wikipedia/Sodacan and imgur.com
Prince Harry was then assigned a Label of 5 Points with three red Escallops, leaving the two other, inner Points empty. It was explained at the time that these two empty Points would be dropped when the time came that Prince Harry became a son of a monarch rather than a grandson and would rightly change to a three-pointed Label.
Next to be assigned Labels were the daughters of the Duke of York. Beatrice was interestingly assigned Bees as a pun on her name and in the same pattern as Harry even though she will always remain the grandchild of a monarch, and Eugenie was assigned Thistle Heads, both symbols coming from their mother's Coat of Arms.
If Louise were to be assigned a symbol or symbols based on her mother's Arms, this might prove difficult as the Countess of Wessex shows one large, rear-facing (reguardant) Lion. The beast is gold on a red and blue background within a thin border or Orle. Putting a metal on a metal is contrary to heraldic law, i.e. a gold Lion on a white Label would clash and not be very distinctive. Maybe the rear-facing Lion could change colour, as the Escallops for William and Harry did since the Spencer shells are white on red. Maybe Louise, and ultimately their brother James, Viscount Severn also, will be assigned Tudor Roses from their father or black Castles in anticipation of their father inheriting the title of Duke of Edinburgh. Either way, we have approximately a year and a month to find out as Lady Louise's 18th Birthday will be on 8th November 2021.
The next will be the Cambridges - George, Charlotte and Louis. George will be the first and in all likelihood, when he turns 18, will be assigned the three-pointed label of the eldest son of the Prince of Wales. What will be the design? More than likely a red Acorn from his mother's Arms. Charlotte may be assigned 5 Points with three Acorns and two St George's Crosses or even Hearts in between and Louis may be assigned blank Points in between three Acorns. The Acorns may, however, be a different colour and, of course, there may be completely different combinations, but we will have to wait at least 11 years at least on that score...