X Factor judge Louis is mentoring the girl band and looked pleased as punch to be on the red carpet with them, especially after they were saved from elimination following their sing-off with Gifty Louise.
Posing in the middle of Sophia, Caroline, Yasmin and Lauren, Louis grinned wildly before they all took their seats at London's Grosvenor House Hotel. The girls looked seriously glam, opting to wear all-black for the prestigious awards ceremony.
Before heading off to the event, Four Of Diamonds had tweeted: "Feeling very excited and humbled... On our way to the Pride of Britain Awards."
Four Of Diamonds entered this year's competition late, after being brought in by Louis to replace Brooks Way. However, despite sailing through their first performance, the girl band have since found themselves in the bottom three, two weeks running.
Following Sunday night's sing-off with Gifty Louise, Nicole Scherzinger, Sharon Osbourne and Louis all chose to save them from elimination.
Judge Sharon in particular picked the girls because she feels they "would make a better album" than Gifty.
Explaining her decision on The Xtra Factor, Sharon admitted: "[I like both of these acts] very, very much. What I was going for was, 'Okay, out of these two, who do I think would make the best album?'
"If either one was there and they could win, which one could really crush it by making the album? And I just decided."
The X Factor continues this weekend on ITV.