United Kingdom, May 9 -- Christine Baranski isn't sure what her real age is.

The 'Mamma Mia!' star recently celebrated her birthday but joked that she is still just going to refer to herself as "being in [her] early seventies" rather than naming a specific number.

Speaking on 'CBS Mornings', she said: "I feel great, I just had a birthday on May 2nd, but I'm not sure if it's 72 or 73. I think I'm somewhere...at this point you say 'I'm in my early seventies...' and then you hope that you never have to say that you're in your late seventies.

"But I'm still jamming, it's fine!"

But the Emmy Award-winning actress - who is now starring as super-rich Victoria in the second season of the Hulu thriller 'Nine Perfect Strangers' - doesn't mind t...