The Princess of Wales has pulled out from a planned attendance at Royal Ascot. Catherine, who is making a gradual return to public life after her cancer diagnosis last year, is trying to find the right balance as she fully returns to public engagements, according to royal sources.

Kate announced in January that she is in remission from cancer. Princess Kate turns 43"GMA" celebrates the Princess of Wales' birthday with a look at her challenging year and gradual return to the spotlight.