Wow, Sarah - this is an amazing development. And it sounds as if it is something you would like to do, even if it is nerve-wracking. So....
I have done a fair bit of travelling where during the trip I have to make a public appearance of some kind. (Not on TV, but in front of an audience.) Here are some tips that have proved helpful to me.
1. Check the probable weather and the humidity range as well at your destination. That will rule some things out and some things in -- immediately.
2. Consider footwear first. What size of bag will you be able to take, and how many shoes? Changes of footwear can be heaven-sent, and even necessary, if you need to do various types of activity on the trip. But at the same time, you want to be efficient here.
3. For travel -- jersey or ponte knit items are wonderful (depending on time of year/ temperature, etc.) And layers. One of my favourite travel outfits is tights (if it is cool), a jersey dress (layered over a long-sleeved tee or t-neck, if cold) and a pullover or cardigan over top. Or Angie's formula from the other day. If the weather is on the cool side, the outfit you showed us the other day with the moto might be perfect for travel! Or a version with shoes instead of boots.
4. For the concert you'll be attending -- I like the idea of a dress, since that fits with your feminine side, and the green dress could be great. But also consider the wrinkle factor. If you have a jersey type dress, that could be easiest. If not, no worries -- you will probably have an iron at your destination and can make sure the dress looks perfect.
5. For the interview: No busy patterns. Nothing that will wash you out. Ideally, a plain coloured top that won't wash you out. Try to find out how they want to stage the conversation. Is it going to be "natural" and "casual" (i.e. you'll be sitting on a couch or similar) or will it be a more formal discussion at a table or something. If it were me and I were going to be sitting on a couch (esp. one that might make me sink into it a bit) I would not want a skirt on. You should ask them what they will need to attach the mike to you -- some cuts of clothes make this difficult and it's awkward.
Ultimately, I think your goal will be to find the right combination of softness and comfort together with structure (so a jacket, perhaps or a woven top for the interview). You want to be "you" and you want to look your best.
