Shirley, 59, has been beset by cruel online trolling since several controversial decisions from the judging bench during the last series of Strictly.
Now, she has revealed that she received a handwritten note delivered to the theatre where she’s performing panto.
Yet the head judge urged fans to keep positive as we head into a new year.
Part of the note read: “Gob*****. Could you – during your gob******* performance – remove your head from your huge fat a******.”
Shirley calmly said: “As we know I had quite a lot of bullying on Strictly last series and my Instagram inbox was full of horrific and horrendous messages.
“Now it’s gone a step further and I’ve had a hand delivered message addressed to me, with not so nice comments or words.
“I do find it quite upsetting when I’ve been out there performing and then I read something like this from someone who doesn’t even know me.”
Ever the optimist, Shirley reached out to fans who had received similar hateful messages.
“Anyone out there who receives awful messages or hate mail,” she said, “The issue is the other person’s, not ours.
“My message is, be strong going into 2020 and really love yourself. Don’t be phased by the bullies.”
Captioning snaps of the message and envelope, she wrote: “Well I guess this will never end.
“Cowardly to just drop off at my place of work. All the judges on strictly are there to do the best job we can.”
She continued by tagging her fellow judges, who’ve also been the victims of cruel trolling.
“Enough is enough now,” she added, “Positive vibes for 2020 please. #hatemail #hate @motsimabuse @brunotonioliofficial @craigrevelhorwood @bbcstrictly have a beautiful 2020.”
She’s always been candid about the trolling, as she told Jonathan Ross during an appearance with two of her fellow judges, Motsi Mabuse and Craig Revel-Horwood.
Shirley revealed: “Somebody put a picture with my face on it digging my own grave [with a comment] ‘Die b****’ and put me on a chicken spit.'”
Craig chimed in: “I always think of it as a comic strip, I never really think of it as anything. Everyone is entitled to their opinion of course.
“I’m very opinionated. These people who are writing stuff online, I think, need to sometimes be…” He made a zipping motion across his mouth.