<human>: I've been dating my girlfriend for 3 years now and I love her dearly. I still think she's gorgeous and look for ways throughout the day to keep her reminded that I desire her. 

My problem however is that when we go out she doesn't seem to put much effort into what she wears anymore. Usually she just throws on a hoodie, jeans, and sandals if we go out, unless its something formal, and while I know in my mind how beautiful she is, I can't help but notice other women when we walk down the street. 

I know people get comfortable after dating this long, heck I admitted that I did and have been maturing my style and hitting the gym more often. But how do I get my lady to show me the beauty I love more often without making her feel like I've started to find her less attractive?

Could you distill the essence of the text into 1-3 sentences?
<bot>: Girlfriend's beautiful, doesn't show it, want her to show it more but don't know how to ask without sounding like an ass