And the 12-year-old wished it could have lasted forever.
"Everybody said 'keep smiling' for the photos, but it just came naturally.,'' she said.
"The day was just how I'd imagined it, it was amazing. The highlight was walking into Glebe Park and being on stage."
Shanagh, who marked her last day as a Deanburn Primary pupil on Friday, had been up from the crack of dawn to get her hair done with (now former) Queen Eilidh. Fair Day was action-packed, including a dance at Douglas Park with a Robbie Williams tribute singer, and a formal dinner at the Town Hall.
"Leading up to the Fair you get all excited, but on the actual day it went so fast," she said.''You want it to last forever."
Rounding off the 101st Children's Fair, Queen Shanagh said: "I went to a party at my neighbour's and fell asleep on the couch!"
She now can't wait to play her royal role over the next 12 months, such as switching on the Christmas lights.
Sharing in those happy moments, as they did on Friday, will be the Penman family – mum Pauline (43), dad Jim (45) and brothers Chris (16) and James (13). Re-living last Friday, Pauline said: "I was just speechless, it was a brilliant day and amazing to see another side of the Fair.
"Everybody was really so nice and I can't thank them enough."
There has been a stream of visitors to Shanagh's frontage in Benjamin Drive, that cleverly incorporates the Hippodrome, a Tin Man-driven bus and Hope Street shops of yesteryear. An army of up to 20 people worked hard to get it looking just perfect.
Dad Jim, himself a Royal Ascot jockey presentee as a Kinneil P1 pupil, said the nostalgic theme had been well-received.
"The reaction has been fantastic.
"We've heard from some locals that some people from care homes, that haven't been out to the Fair for years, were hoping to come up in a bus over the weekend."
For a look at the Fair through the ages, vist
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