Allie Ayers exposed cleavage as she rocks bathing suit

The 23-year-old's left strap fell off her shoulder, and the side of the swimsuit slid down - but she held a hand over her bosom to ensure that she stuck to Instagram's Community Guidelines.

'All eyes on @allieeayers...,' the caption started, putting in an eyes emoji.

They added the hashtag: '#SISwimsuitSearch' and tagged the Mahogany Bay Village resort in San Pedro, where it appears this picture was taken.