The 33-year-old actress has been called out by viewers of the show, who called her "disrespectful" and accused her of failing as a "role model."
Cooper wore a small Remembrance Day pin on the lapel of his suit but Miller's metallic pink dress was poppy-free.
According to The Sun a source said, "She was wearing the poppy pin but it was taken off as she went on air as it was pulling on the clothes."
And boy, did it cause a fuss.
Sienna Miller didn't wear her poppy because it was pulling on her clothes. Love, try one of the paper ones, not the £500 fancy sparkly one— joanne henry (@JoanHenry7) November 1, 2015
#grahamnorton Why is Sienna Miller not wearing a Poppy ? Has she refused ? If yes why is she allowed on the show ? Disrespectful cow.— Ibrahim Banks (@TheShowOff85) October 30, 2015
Some viewers did speak out in defence of Miller, asking whether she deserved such criticism:
Boo freaking hoo, Sienna Miller didn't wear a poppy on TV last night. Respect for the dead is in your head and your heart, not your dress.— Matt Ghoul (@ApolloCandy) November 1, 2015
'Sienna Miller slammed for not wearing poppy during Graham Norton appearance' Really? That's an issue in the world? No.— Rob Mitchell (@stillmation) November 1, 2015
So the poppy fascists are now after Sienna Miller. Thought those who died, did so for freedom of choice and speech!— Crazy Horse45 (@Celtusthechief) November 1, 2015
Surely wearing a poppy (or not) is a personal decision and one that Miller — or any of us, for that matter — is entitled to make without being criticised? Of course it's important to commemorate the brave, selfless servicemen and women who died while trying to make Britain a safer place for all of us. But shouldn't we do that all year round and not just in the lead-up to Remembrance Sunday? By putting so much emphasis on the act of pinning a plastic poppy to your clothes (be it on a TV chat show, in the workplace or at school) it takes away from what the poppy symbolises.
Miller hasn't commented on the fuss her appearance on The Graham Norton Show caused. It's entirely possible that she has donated to the Poppy Appeal and will spend some time this Sunday deep in thought about the millions who died in Britain's wars. Or maybe she won't — which is OK too. The point is we don't know — and we're in no position to judge.
We can care about helping those living in poverty, and raise and donate money to help Comic Relief, without wearing a red nose. The same goes for the Poppy Appeal.
The Royal British Legion's Poppy Appeal is held every year ahead of Remembrance Sunday, which falls on Nov. 8 this year.
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