My partner wants to wear T-Shirts out to fancy dinners? How do I get her to be more sexy?

im taking my partner out to dinner tonight for our anniversary and I just asked her to send me a snap of what she’s wearing and she sends me this?

she’s wearing a T-shirt with pants?
She’s an Astro physics major and her whole life revolves around science and shit so she usually incorporates sciencey shit like t shirts she gets for free at conferences and so on

its a special dinner and I’m wearing a suit,

how do I tell her to wear something sexy instead of looking like a geeky nerd

My partner wants to wear T-Shirts out to fancy dinners? How do I get her to be more sexy?
My partner wants to wear T-Shirts out to fancy dinners? How do I get her to be more sexy?
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