A couple weeks ago, I went to Iowa for a week to train for my new job. Since I was going to be traveling by myself (as in, B wasn't going to be there to carry my luggage) I insisted on packing everything I was going to wear in an overnight bag (the one you see in the photo above). People freaked. I thought it wasn't a big deal. And I took photos to prove IT CAN BE DONE. Spoilers: I cheated. But not really.
Exhibit A. My traveling outfit. Kensie top, H&M skirt, Target sandals
Exhibit B: Urban Outfitters top, H&M cami and pants, DWS sandals
Exhibit C: I had to get some cheap-o plimsolls because we were touring a factory that required close-toed shoes. I also bought a cheapo men's tee because I didn't want any of my tops ruined (Just in case) I did tote my H&M denim though.
Exhibit D: Mossimo top, H&M denim, DSW sandals
Exhibit E: Casual Friday & my going home outfit. While looking for a cheap-o shirt for the factory tour, I also snagged another cheap-o skull shirt that I wore for the trip home, which means, I still had 2 extra potential "outfits" that I didn't even touch at the end of the week. Paired with my H&M skirt and Target sandals.
VERDICT: It is TOTES possible to pack everything I need for one week in an overnight bag. I managed to bring my underwear for 6 days, 2 sets of jammies, 2 sets of workout clothes, 2 pairs of sandals, a pair of running shoes, a skirt, a pair of jeans, a pair of pants, 4 tops (plus 2 I bought and toted home). I carried a larger than usual purse where I packed my liquids, makeup, books, and ipad. I didn't have to check anything in, wait for my luggage at the carousel, and I would do it again in a heartbeat.