Sure thing! Here's a version with "Mommy" instead of "Mummy" to better match American English (and still keep all the fun):

Graphic Text: "Mommy’s Dramatic Sidekick" 🎭💁‍♀️💥
Every mommy needs a partner in crime—and this one just happens to be a little extra! 😆 This tee is made for the tiny superstar who never misses a chance to turn everyday moments into dramatic masterpieces! 💃🕺
Whether they’re throwing Oscar-worthy tantrums 🎬, serving sass like a pro 😎, or just keeping mommy on her toes 👣—this shirt brings all the personality. Made from ultra-soft, breathable cotton 🌈👕, it’s comfy, adorable, and full of character (just like them!).
✨ Available in a rainbow of colors and kid sizes
🎁 Perfect for birthdays, baby showers, or “just because” gifts
📸 Great for mommy-and-me selfies or sibling matching fun!
 
Because life with kids is always a little dramatic—and we wouldn't have it any other way! 😉