Ariarne Titmus spoke out against a sports betting advertisement.

The ad starred actress Sydney Sweeney.

Titmus argued it sexualised women's sport.

The advertisement drew criticism.

Other elite athletes also spoke out.

The ad was for a sports prediction company.

As a separate matter, Titmus revealed she is engaged.

Her fiancé has been named as Mac Powell.

She wrote the word 'Forever' on social media.

The engagement news had nothing to do with the ad.

Titmus's comments were part of a public backlash.

Athletes from various disciplines joined in.