I often see people argue that Cortana's design is highly sexualised, but the topic is more nuanced than that. She was intentionally designed to resemble a younger Halsey, including having a naked female body. While she appears nude, that doesn't automatically make her design sexual.
The female body is often associated with beauty, power and influence. Having one of humanity's most advanced and powerful creations take the form of a women could be seen as symbolic rather than pure sex. Her appearance very much reflects the idea that power comes in many forms, including traits traditionally associated with femininity.
What I'm trying to say is that Cortana being naked is not inherently sexual yet its the audiences fault on how they truly perceive it (I mean just look at how the Halo fandom treats women and female characters)
I will always love Cortana and believe that she is so much more than what the later games and fans made her out to be 🤍 The female body is a treasure and she is to