There is a thong slip in The Thundersmans in S02E07: Blue detective, minute 09:05. It would be nice if someone can find it in HD (its not easy).
Btw, she was around 16-17 years old. Still can post it? I dont really know
It’s impossible to take a screenshot from my phone when I tried watching the episode on Hulu due to copyright, but it’s basically just a quick second of Kira tumbling backwards outside into some garbage pails and you can just see the black strap of what looks to be a thong.There is but judging by the scene there is a 99% chance that it’s a stunt double