Furious mums and dads complained that the £17-a-ticket event aimed at five-to-seven-year-old kids was a shambolic fire risk and inappropriately sexy.
They said the actress who played Anna had her 'boobs spilling out of her top', 'I'm Too Sexy' by Right Said Fred was played over the sound system and there were too many kids crammed into the venue in Beckenham, South East London.
After the party, parents went to newspapers to voice their anger.
One mum, Jodie Wise-Steppel, said: "The whole event was shambolic. Sadly, the highlight was Anna's boobs literally spilling out of her top.
"The party was a fire risk and a hazardous nightmare. They sold far too many tickets for the event, the organisers were too greedy and didn't consider the consequences.
"Me and my children were barged, pushed and shoved."
She added: "The cake lady stormed out with her Frozen-themed cake. After just minutes, there wasn't any food left, and there weren't enough seats.
"I could have done a better job on the face-painting. The staff were headless chickens all shouting at each other, and the sound system was like a two-year-old's karaoke machine."
Another mum, Nadine Rochford, 40, added: "I think it's not just a shame but at times bordered on chaotic and at worst could have been dangerous.
"All in all, my friends and I just left after 45 minutes, as our children, aged three and four, had seen nothing, had no seat and missed the welcome cakes."
Kathryn Marshall took her five-year-old and seven-year-old daughters, but is now demanding a refund.
She said: "I was shocked at how badly planned and unsafe the event was.
"The kids were so squashed on the dance floor that they were unable to participate in any of the activities.
"We left after an hour with both girls crying.
"Not a great experience for something that cost us £35 and was supposed to be the highlight of our month."
A spokesman for Perfect Kids Parties, which organised the event, said: "We have taken on board the honest feedback received from a minority of customers to make sure issues of parent overcrowding do not occur again and look forward to welcoming children to our future events.
"Children's safety is of paramount importance to us."
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