Your wife could be feeling she no longer catches your eyes. Due to this, it is upon you as her man to make her feel confident that she is indeed beautiful.
1. Tell her she is beautiful
Of course, this is the first thing you should always do. If you no longer compliment your wife; you are a lost man. Look her in the eyes and tell her she is beautiful.
2. Don't compare her to other women
Comparing your wife negatively to other women will make her feel low and degraded. Make her your queen; own her, she is yours and you have the responsibility to make her feel that she belongs to you.
3. Keep a photo of her in your wallet
Yes, she needs to feel that she belongs to you. She wants to believe that she truly means a lot to you. Introduce her to your friends as your "beautiful and awesome wife".
4. Be affectionate
Let everyone see how proud you are to have her as your own. Tell the world how happy you are to be walking beside your queen of the universe. This helps her win back her pride and self-worth.