2010-09-08 17:32:07 -

Cancer survivor MARTINA NAVRATILOVA, British actress HELEN MCCRORY and si nger MACY GRAY are among celebrities lending their support to a new breas t cancer awareness campaign.
The stars are urging fans to wear a special Ralph Lauren t-shirt brande d

with the Pink Pony logo to promote the organisation's 10th anniversary.
Navratilova, who won her battle against the disease earlier this year ( 10), is calling for women to have more check-ups so doctors can detect ca ncer early.
She tells Britain's Marie Claire magazine, "The treatment was the harde st part. Now, I want to use my experience to raise awareness and emphasis e the importance of having routine scans and regular check-ups." Harry Potter star McCrory is pictured wearing the t-shirt on the set of Martin Scorsese's new film Hugo Cabret. She says, "We have to take the s ame advice we would give a friend. If something feels wrong get it checke d out."