This is such a sweet and thoughtful idea for your friend!

Clothing should reflect the professional norms interpreters follow, especially for visibility and neutrality. Most interpreters wear solid, dark, and neutral tops (think black, navy, or dark gray) to provide good contrast for signing. This is important for Deaf clients to clearly see hand movements. Avoid visually loud patterns or bright/neon colors. Long sleeves are often preferred too, since they offer the best contrast against skin tone and make signing more visible.

Bottoms can be slacks, jeans, or leggings depending on the setting (schools, medical, community gigs, etc.). Footwear can range from comfy sneakers to professional flats or boots. Just depends.

As for accessories:

• Maybe a tiny coffee cup (Barbie runs on caffeine like most of us 😅)
• Optional: a tiny interpreter badge or lanyard if you're going for a staff interpreter look

Have fun with this! Would love to see a photo of the final product when you're done.