The 72 year old was among the original castmembers who returned to Dallas when the Tv show was rebooted in 2012, reprising her role of Sue Ellen Ewing.
However, Gray admits she dreams of playing a completely different character on the small screen as a member of the Downton Abbey cast.
She tells Britain's S magazine, "My favourite Tv show is Downton Abbey. I'm addicted. I'd love to be in it."