Is it normal for hips to enlargen at age 31?

Dear doctor; I am 31 now but I have noticed that my hips are enlarging. Although I am still single and yet to give birth, it worries me a bit especially because I lately took to jogging and occasional gym sessions. Is it normal for a woman’s hips to enlarge so late in life like this? Does this mean my puberty is still on?
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Times Reporter