Jen gets the news that her hero costume is finally ready and finished, she's absolutely ecstatic and can't wait to see what it looks like and try it on. She gets told by Aizawa that it was made by her Uncle Gambi as what Jeff had told him over the phone. She loves it and tries it on and says it's perfect and not to mention comfortable to wear in.
The next day during training, she debuts her new hero costume and everyone loves it (Bakugo doesn't care although), Mineta tells her how hot she looks and even clings onto her leg, drooling and saying some inappropriate comments towards her about how she looks in her suit Jen electrocutes him off her.
As she was wearing the costume during training, she felt protected and safe while wearing it, and more importantly, she felt like almost a real hero who's on a good path to her future. She calls her Uncle Gambi