She has posted photos and video on Twitter
Christmas decorations are starting to go up in cities and towns around the world - and the US is no exception.
US First Lady Mealnia Trump has given people a tour of her first Christmas at the White House.
This year's theme is 'Time-Honoured Traditions' and was designed by Mrs Trump.
She has posted photos on Twitter, with the caption "Preparations are underway to celebrate the holidays at the @WhiteHouse!".
They show her talking to chefs, helping to decorate a cake and putting a ribbon on a wreath.
The cake is a gingerbread house, which is made using 300 lbs of dough.
She also tweeted a video, showing the finished product - and it is bright.
Mrs Trump says: "The president, Barron, and I are very excited for our first Christmas in the White House.
"As with many families across the country, holiday traditions are very important to us.
"I hope when visiting the People’s House this year, visitors will get a sense of being home for the holidays. On behalf of my husband and Barron, I want to wish everyone a Merry Christmas and joyous holiday season."
Throughout the month of December, more than 25,000 visitors will take part in White House public tours.
But not everyone is seeing the festive side of things, with one Twitter user commenting: "Looks like tax dollars spent wisely. Not."