A number of events are set to be held all around the North-east to mark the 90th birthday of the country’s monarch.
Beacons are to be lit, parties to be held and cakes are to be given away all to celebrate The Queen’s landmark anniversary.
Aberdeen City Council and Angus Council will both light beacons to mark the occasion.
A torch is to be lit at Hazlehead Park at 8.30pm outside the Park Cafe.
And entertainment will be provided by the Bon Accord Silver Band – which has a history going back over 50 years in the region.
Angus Council will be flying the Union Jack at its headquarters and the Lord Lieutenant of Angus Georgiana Osborne has sent a birthday card to the Queen on behalf of the people of the county.
A series of beacons will also be lit across the region.
Royal events such as coronations, jubilees and weddings have traditionally been celebrated with hundreds of torches and bonfires being lit across the country.
The Queen will light the first beacon in a chain which will reach the four highest peaks in the United Kingdom, including Ben Nevis.
The last major beacon celebration was on Her Majesty’s Diamond Jubilee in June 2012.
There will be more than 1,000 beacons set ablaze tomorrow night with Her Majesty due to light the first one at a ceremony in Windsor.
And there will be plenty of cake being served up to mark the occasion with a series of tea parties and a cupcake give-away.
Queen Street Church in Aberdeen has invited members who will reach their 90th birthdays this year or have already reached their 90s to an event.
There will be 15 pensioners attending the celebrations, which will include the Reverend George Goldie who will be turning 90 in June.
Myra Calder, who is a member of the church, said: “The congregation thought it should celebrate the long and active lives of these members as well as celebrating the Queen’s birthday.”
Hundreds of free cupcakes are to be handed out at Balmoral Estate to celebrate the milestone as well.
Caterers on the Aberdeenshire estate expect to hand out more than 500 complimentary bakes on the day.
And the gates of the 50,000 acre estate in Royal Deeside will also open to the public for a special one night only event on May 15.
People will be able to watch the final of the QE90 event staged at Windsor Castle beamed live onto a giant screen in front of the castle.
More than 900 musicians, dancers, actors, artists and horses will be performing in the theatrical spectacular.
Residents in the county of Kincardineshire who were born in 1926 have been invited to attend a party with the Lord Lieutenant of Kincardineshire Carol Kinghorn.
The Lord Lieutenant of Aberdeenshire James Ingleby will also host a tea party on May 17 for people who were born in April 1926.
The event will be held at Aswanley, near Huntly which is home to the Ingleby family.
Mr Ingleby said: “Unfortunately we can’t invite all the 90-year-olds in Aberdeenshire as there are about 500, so this is why we chose to stick to the month of April.
“I think it’ll be a wonderful event.”