She flaunted her toned arms, while the halterneck straps of her bikini top popped out from the extra layer.
Last night, Kirsty shared a selection of photos from the ceremony - including a snap of herself and Natalie on the blue carpet for the event.
MailOnline may earn commission on sales from these product links Impressive: Showing off her incredible post-baby body, Natalie donned a figure-hugging lace gown over a nude slip She went on to describe Willow's birth via a pioneering natural caesarean as 'unbelievable', saying of her daughter: 'She's a little miracle and her coming into our lives has made our family complete.