Ariarne Titmus spoke out against a sports betting advertisement.

The ad included actress Sydney Sweeney.

Titmus argued it sexualised women's sport.

The advertisement sparked criticism.

Other elite athletes joined the criticism.

The ad was for a sports prediction company.

In separate news, Titmus shared her engagement news.

Her fiancé is Mac Powell.

She shared the message 'Forever' on social media.

The engagement news bore no relation to the ad.

Titmus's comments contributed to a public backlash.

Athletes from various disciplines added their voices.