Would losing the weight be worth it?

I'm going to my very first Anime Con next summer. Anime Expo in LA. I'm going with my best friend and meeting up with my other friend and his girlfriend at the con. It'll be great!

That's not the problem though. I'm cosplaying with my best friend, we're going as Ciel, Finny (Black Butler) and Dawn, May (Pokemon). We're making our own costumes and everything. I'm on the heavier side. About 20 pounds above my weight goal. (5'7, 165 lbs). I really want this to look good and I want people to compliment my work and stuff. I'm worried that my extra 20 pounds will mess everything up. I'm not obese or anything, just chubby.

Would it be worth it to lose some weight? Or am I being ridiculous?
Would losing the weight be worth it?
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