I GOT THE INTERNSHIP! I took like no one's advice (I'm sorry! But thank you for offering it nonetheless) and wore a plain black shirt, no logo of any sort (I think it's from Forever 21, about 12 years ago). The interview was like a dream. The two interviewers were super friendly, super personable, and very interested in me and my experience (Rogue Fitness and Specialized bikes). I was laughing and smiling the whole time, and just didn't want it to end.
I haven't accepted the offer yet, as I have three other potential offers. But I'm very excited to have this option and think I would have an amazing summer working for UA.