Ariarne Titmus has criticised a sports betting advertisement.

The ad included actress Sydney Sweeney.

Titmus claimed it sexualised women's sport.

The advertisement drew criticism.

Other elite athletes joined the criticism.

The ad was for a sports prediction company.

Separately, Titmus announced her engagement.

Her fiancé is Mac Powell.

She posted the word 'Forever' on social media.

The engagement news had nothing to do with the ad.

Titmus's comments formed part of a public backlash.

Athletes from various disciplines added their voices.