Look your age
Definition 1 of 1
Pro Tip 1/3Age Perception
This phrase often reflects surprise that someone looks younger or older than their actual age. 
At your 50th birthday party, guests might say, 'You don't look your age at all!'
Pro Tip 2/3Neutral Tone
'Look your age' is not an insult or a compliment by itself; it depends on how it's used in a sentence. 
When I said you look your age, I simply meant you appear mature for your years.
Pro Tip 3/3Cultural Sensitivity
Age can be a sensitive topic; using this phrase might be impolite in some cultural contexts. 
In her culture, it's rude to tell someone they 'look their age'.