ABOUT 300 volunteers braved the cold to sleep rough and raised thousands of pounds for Notts homelessness charity Framework.
The charity says it was "overwhelmed and humbled" by the level of public support for the event.
University of Nottingham student nurses, from left, Sarah Mellish, Daniella Duff, Laura Sheldo, Rebecca Bramley, Danielle Walker, Holly Roach and Maggie Donnelly cuddle together in their cardboard bunker.
Left: Eleven-year-olds Jak Bailey, left, from Rise Park and Evan Poole, from Arnold, saved their pocket money to bring along marshmellows and hot chocolate for the volunteer sleepers.
Right: Jo and Brain Willett, from Burton Joyce cuddle up in their matching all-in-one nightwear.
Thirteen-year-olds Rhianne Mee, left, and Maia-Aimee Webster – known as the Angeli Carmen Duo – braved the cold in their ball gowns to sing lullabies.
Tanya Tozer and Andrew Gee, who work at the Wickes store in Bulwell, settle down for the night in their sleeping bags.
Right: Dan Wagstaff, right, and Sasha Hall, who work at the Kimberley branch of Your Move, find themselves in alternative accommodation for the night.
Left: Dawn Dethick, 40, from Bulwell, who has been homeless three times, puts the finishing Christmas light decorations to her cardboard sleeping den.
It saw people sleep outside in Bolero Square, outside the Capital FM arena, last Thursday.
With just a cardboard shelter, a sleeping bag and extra layers of clothing at their disposal, the participants experienced what it is like to be homeless in the winter.
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The crowd were entertained on the night by a range of performance artists.
They also had the opportunity to take part in a Box Factor competition, where the most original and decorative cardboard creations were recognised.
Among those who slept outside were a group of youngsters from the Keyworth Explorers, a section of the Scouts.
They were among the first to set up their cardboard boxes and were all wearing brightly-coloured "onesie" sleep suits.