The 36-year-old star admits she's beginning to age and can see more of a resemblance between her and her 66-year-old dad now, particularly around her cheeks.
Speaking in the July issue of Glamour magazine about her appearance, she said: "The jowls I got from my dad, seem more pronounced ... [and] I've got a couple of grey hairs."
However, the brunette beauty insists she's not bothered by the process of ageing because her health is her priority.
She explained: "I've noticed that when I'm happy and healthy on the inside - eating well, laughing with my best friend - I feel more beautiful on the outside."
Meanwhile, Liv - who raises Milo, 10, with her ex-husband Royston Langdon - recently admitted that she believes it's impossible to balance a personal and professional life and one will always suffer at the expense of the other.
She said: "Perhaps I shouldn't think this way but, from a very young age, I had this idea in my head...
"That if you are very successful in your career and you're giving all of your attention to that, then your family life will not ... I need to word this in the right way....
"The life of your family possibly won't flourish as it might. But when you focus on your family and you put that first, then your career suffers in some sort of way.
"I can live with the career part not going so well, I think, but I don't think I could live with my family not."