Queen Elizabeth, who has been taken part in hunting and shooting all her life, is turning her back on fur. However, despite this, Ms Kelly admitted that the monarch would still "wear old outfits with fur on". Buckingham Palace confirmed the news to the Telegraph and the Daily Mail, saying all fur for future outfits designed for the Queen will be fake.
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Queen Elizabeth attends Christmas mass in 2015, wearing a fur trimmed coat and hat.
Queen Elizabeth leaves church in January, 2019, at Sandringham.
At this stage, it is not clear whether the Queen's wardrobe change will extend to her historic robe of state, which she wears at the State Opening of Parliament.
The Royal Family have often been criticised for their use of fur over the years, including mink, fox, rabbit - and even alpaca.
In the past, CNN added, the Queen had been criticized for her fur looks by animal rights organizations like PETA.
Buckingham Palace said the rule applied to all new outfits made for the monarch - but she will continue to wear items made of, or trimmed with, real fur from her existing wardrobe.
"We are thrilled that Her Majesty has officially gone fur-free", Bass said in a statement.
The campaign group has also called for the traditional bearskins worn by members of the Queen's Guard to be "replaced by the humane, luxurious faux bearskin that PETA has helped develop alongside faux-furrier Ecopel and designer Stella McCartney".
This is a huge change for the queen, as she has many famous fur coats and cloaks, which she has worn for decades-including one floor-length pelt that she's had on rotation since the '50s.
The news follows steps by several fashion houses to go fur-free and improve their green and ethical credentials as consumers become more environmentally aware.
Bass said that she hoped the news would send a positive message that fur was no longer considered fashionable.