A second part of  kaafan10 's request, as this is Tri- excuse me, THE GREAT AND POWERFUL TRIXIE'S DAUGHTER!!!- Trina. And now, storytime.

Today was the day, Trina and her mom Trixie were gonna preform their new magic entertainment trick.
"Hold still sweetie, or else you'll ruin your preformance diaper." Trixie said.
"Sorry mommy, I'm just super excited to try this new trick out." Trina giggled.
"I know you are, but the trick has to be preformed with us out there, not in here." She smirked. Trina blushes.
"Mom!" Trixie giggled as Trina blushes a shade of red on her cheeks.
"It's okay sweetie, you're gonna knock em dead. Hopefully the smell won't either."
"MOM!" Now Trina's entire face was flustered red, along with her ears. Trixie laughed and calmed her filly down, assuring her that she was just joking. Soon their stage show was set up, as diapered mares and colts along with other fillies were sitting down and ready to watch the show. Trina was peeking behind the curtains, seeing the audience in view. "Wow! There's a lot more ponies since last event."
"Sure is sweetie. Now are you ready?" Trixie asked. Trina hopped around to face her in a ready stance.
"Ready mom!" Trixie smiled, as they both then burst through the curtains as fireworks went off behind the stage coach. The sky was lite up in colors, as the fillies giggled in joy and the ponies 'Oohed' in awe.
"Mares and gentleponies! Fillies of all ages! Prepare to be amazed by the magical mother daughter duo of the great and powerful Trixie and the great and powerful Trina!" Trixie announced, as the audience of ponies clopped their hooves on the ground in applause and cheered.
"Yea-Oof!" Trina's cheer was halted, as she gripped her stomach tight with her hoof. Trixie noticed and looked over to her daughter.
"Are you alright, sweetie?" She asked.
"Ooohh... I think I had a bad burrito mommy." Trina whined.
"Then Trixie better check if you made an oopsie." The fillies giggled as well as she colts in the crowd. Trixie's horn glowed as she used her magic to peek her diaper open, but then Trina's horn glowed and then fire burst out from her diaper into the air. The audience were amazed, as Trixie and Trina both shouted in their magical stunt.
"TA DAA!" The audience cheered in excitement, and stomp their hooves against the ground to hype up their applause. Trina and Trixie smiled and waves at the audience, then smiled at each other for a perfect mother and daughter moment.
Hope you enjoy.

Trina Info: Born by a town by town magician, The Great and Powerful Trixie, she was picked on for being Trixie's spawn of a failure. Trixie soon explained to her filly that she tried getting revenge on a friend that made her a laughing stalk, but realized that she that to herself. Luckily after a amazing show, ponies started to treat her nicely and stopped throwing tomatoes at her and her filly. She has a slight different color on her body than her mom, hair style is more droopy but color and pattern are the same, along with her eye color, purple. As for the hat and cape, Trixie made them for her daughter when she was just the back stage hoist, and once she was able to perform a spell, she showed her own magician outfit to perform in stage. The diaper pattern, well... a simple spell I say.