Since this one seems to be a very popular piece, I decided to remake it to see how much I improved.
This was done completely from scratch, no references.
I must say it is a vast improvement. It still needs work but I am geting there!
Hands suck, I know.XD
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Twilight has decided to bulk up her body this time rather than just her mind after Rainbow Dash calls her a weak scrawny egghead who would never be big like her and shows her body off to Twilight just to make her feel inferior.
She hit the gym wearing a sports outfit that showed how scrawny she really was. Of course she picks up a water botttle and the latest edition of The Beginners Guide to Bodybuilding for Mares.

Twilight:"What's a Rep? I have to lift what?!"

Some time after...
Looks like she really hit the books! I mean weights!
Her once scrawny frame now filled and defined with powerful muscles. She seems to have also increased in bust size and in overall height. She lifts her right arm and flexes it with a devious grin ,seeing a massive peak in her arm. I don't think her original outfit will hold much longer! If she knew she was getting bigger,then she should clearly know that her outfit would not fit anymore! Maybe she gets a kick at marveling at her muscles ripping her clothes?

Twilight:"Oh my Celestia! I'm ripped!Yes! I'll show Rainbow Dash more than just EYE muscles! I'm so big and buff! But I feel like I can still get even bigger! I'll show Rainbow Dash after a couple more reps or ten....
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My Little Pony and Twilight Sparkle is Property of Lauren Faust and Hasbro

Idea , Description and Artwork by Me.