'Timeless' Jennifer Lopez

Jennifer Lopez feels ''timeless''.

The 43-year-old singer-and-actress - who is dating 25-year-old dancer Casper Smart - doesn't worry about her advancing years so long as she still feels healthy and good about herself.

She said: ''I feel youthful and in a sense almost timeless. In fact, I don't even think of myself in terms of age. I think of the way I feel - and that is very healthy and agile and fit.''

Jennifer - who has four-year-old twins Max and Emme with ex-husband Marc Anthony - thinks she has become a better performer as she has gotten older.

She added to Hello! magazine: ''I just toured the world and was singing and dancing in a very energetic show every single night.

''I didn't feel like I was any less able to do it now than when I was 28 or 25. If anything, I think I'm better at it now.''