The Danity Kane star took to on Wednesday (10Jun15) with a photo of herself wearing a sexy black one-piece swimsuit, adding the caption, "single now. suit by @amiclubwear".

O'Day and Garland recently took their relationship troubles to the small screen for U.S. programme Marriage Boot Camp: Reality Stars, hoping to mend their rocky relationship.

On the reality series, Garland told O'Day, "I'm not ready to get married because you don't respect me. It makes it impossible for me to trust you completely, and I would like for you to be less selfish, too", as O'Day hit back, "He's jealous and he creates conflict, hour after hour."