Her Serene Highness Princess Theodora Sayn-Wittgenstein, 27, was fined £1,000 yesterday after admitting telling first aider Farah Jasmin Hussain: "I was doing my nails this morning - I wondered how many Muslims I could kill."
She turned up at Dundee Sheriff Court wearing a long brown wig to disguise herself from photographers. She then sat on the public benches alongside sex offenders, thieves and drug addicts as she waited for her case to be called.
The princess had gone to St Andrews - where she received a degree in International Relations before working in Jordan - for a reunion with friends and to attend the Oktoberfest party held at Kinkell Byre every March.
At the end of the night she tried to climb a fence before stripping off some of her outfit. When she was taken to the first aid room she made the racist remarks before attacking a security guard and a first aider.
Sayn-Wittgenstein, who works in her father's alternative energy business, then had to be restrained by numerous security guards, before police turned up and handcuffed her. Officers were forced to put her in leg restraints to get her into a police car. She then lashed out at officers - later telling them she did so because she "thought she was being kidnapped".
Sayn-Wittgenstein, who lives in Germany but whose address on court papers was given as the Chelsea area of London, pleaded guilty to two charges of assault, one of breach of the peace aggravated by religious prejudice and one under the Police And Fire Reform (Scotland) Act. The offences happened on March 8.
Defence solicitor Douglas Williams said Sayn-Wittgenstein had "brought shame on herself and her family".
He said: "Her behaviour was totally out of character - she has a has lived in Jordan, immersing herself in Middle Eastern culture. She accepts she made the comments described and that is of particular concern to her - she has no disposition against any group.
"Her behaviour was reprehensible but she has taken responsibility to come back to this country and face the music."
Sheriff Mark Stewart, QC, said: "The overwhelming impression one gets is of disorderly and violent conduct occasioned by far too much drink for someone who was unable to properly deal with that level of intake. I deal with you in the same way as I would deal with anyone who behaves in this way.
"These comments you made are unacceptable - they would cause nothing but division, concern and unhappiness."
Sayn-Wittgenstein left court with her head covered in a coat and her father, Prince Ludwig, covering her with an umbrella. She made no comment.
The charity Oktoberfest event is held annually by St Andrews students but attracts guests from around the world.
At last year's event businessman Emanuele Ferrero Ventimiglia, of London, bit off part of a security guard's ear. However, earlier this month he was acquitted of an assault charge after a jury decided he acted in self-defence.