A global campaign will feature US business mogul Donald Trump, actress Susan Sarandon and Girls Aloud singer Nadine Coyle explaining what 'Strong is Beautiful' means to them (see ads below).
The WTA, which is looking to raise the profile of the women's game, launched the strap-line last year.
The celebrities, along with tennis stars such as Maria Sharapova, Serena Williams and Caroline Wozniacki, were not paid to appear in the campaign.
Andrew Walker, chief marketing officer of the WTA, said: 'There has been rapid growth in women's tennis, but now we think that tapping into the massive following of the celebrities will help.'
The campaign will run across TV and print media around this month's US Open tournament, including on Eurosport. The pan-European sports broadcaster holds the rights to coverage of the tournament until 2017, having renewed its deal earlier this year.