Красотой сыт не будешь

An attractive appearance alone does not provide livelihood. See Красота до венца, а ум до конца (K), Красота до вечера, а доброта навек (K)

Cf: Beauty doesn't make the pot boil (Am.). Beauty is a fine thing, but you can't live on it (Am.). Beauty is no inheritance (Am., Br.). Beauty will buy no beef (Br.). Beauty won't buy groceries (Am.). Looks aren't everything (Am.). One cannot live on beauty alone (Am.). Prettiness makes no pottage (Br.)