The charity asking local people to become Christmas Angels and help put a smile on the faces of young people without family to be with.
Every night YMCA DownsLink Group provides a safe home to 763 young people at risk of homelessness, some as young as 16.
But, more than just a home, they give those vulnerable young people a second chance and a future to look forward to. Now they want to make sure that they can look forward to a happy Christmas too.
Every year, the charity"s staff and volunteers give up their time at Christmas to make the festive season special for their young residents.
Any young resident who doesn't have family to be with is invited to spend Christmas Day with them.
Every project across Sussex does it slightly differently, but all of them will have a traditional Christmas lunch, games, a personal present and most importantly a family atmosphere.
Charlie Worsfold, a former resident explains exactly what it meant to her to spend Christmas with YMCA:
"I spent 2 Christmas in YMCA DownsLink Group. I remember one year I was out of work and spending Christmas Eve there alone with no gifts or cards. I woke to receive a box full of amazing treats, slippers, bath goodies etc and was cooked an amazing dinner.
"The residents were all so happy and the atmosphere was great. I will always appreciate the effort and thought that went into ensuring we were not alone at Christmas.
"You have no idea what impact that place had on my life and future. I'm so thankful and lucky."
Many of us take getting a thoughtful Christmas present for granted. But, for a young person without family, such a simple act of kindness - the giving of a gift, show's them someone has thought about them and cares.
It is hard to put into words what a difference this can make to a young person who hasn"t experienced much love in their lives.