The dancer and choreographer’s ample assets were impossible as she walked the red carpet outside the capital’s Banqueting House.
Wearing her dark tresses up in a simply ponytail, the 74-year-old let her busty outfit do all the talking at the star-studded bash.
Arlene’s cleavage was very much on display thanks to her otherwise modest black dress, which featured daring cut out detailing on the chest.
The television judge’s frock also featured a polo neck, floaty skirt and long sleeves, which she teamed with eye-catching jewelled stilettos.
Arlene, who left the hit BBC show back in 2008, polished off her attire with statement earrings and a matching handbag.
Also in attendance at The Sun Military Awards was Penny Lancaster, Rod Stewart, Coronation Street’s Helen Flanagan, Frankie Bridge and Andrea McLean.
The latter, who recently walked down the aisle for a third time, showed off her curves in tight black dress.
The 48-year-old’s outing, which also saw her accessorise with a furry shawl and heels, comes after her former Loose Women co-star Carol McGiffin revealed she was snubbed from her wedding.
The TV star wrote in her Best column: “My old Loose Women mucker Andrea McLean got married last week, so congratulations to her and new husband Nick.
“I’m ecstatic for them both, even though I wasn’t invited to the wedding… What’s not good though, is that Andrea’s managed to squeeze in two weddings in less time that I’ve been engaged to Mark, which is a bit embarrassing to say the least!”