My cat get huge adjectives of a sudden,why?

2 weeks ago my cat was normal sized and now I'm positive she have a growth spurt or something. She's not fatter, just bigger bones and stockier. I'm pretty sure she's a maine coon or a mix of one and she's 2 years 7 months... is that normal? I thought cats stop growing closer...
Our Tabby is 8 years old and weigh 20 lbs I like what you said "just bigger bones and stockier" I will start using that line when some one comments almost her weight.
i have some friends that enjoy a main coon, and that's a big kitty. i love the bigger bones and stockier term you use, describes that cat very powerfully.
i don't know if it's normal though you could ask your vet.
Answers:    maine coons keep growing until they are about 5, because they are so big.
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Why is my cat doing this?   I've lately hit a cat at 2am surrounded by the morning at 60mph i drove put money on departed it to find it departed, what should i do ?   Can a cat loose their voice?   Does anybody know a road to stop my cat?