I got invited to a pool party and I'm fat?

You are fairly heavy for your height, but that doesn't mean you can't look good in a bikini. Since your stomach isn't the problem, show it off! The more you show your stomach the better people will think you look. Get some swim shorts to wear over your bikini bottoms to cover your thighs. But make sure they are shorter than boy's swimming trunks or you'll draw more attention to yourself. A friend of mine has really big boobs and a fat belly, but she wears jeans on bottom to help balance out her upper half. If you wear jeans or shorts over your bikini bottoms when you're not in the water, make sure they have a low rise or leave them unbuttoned because if they squeeze your stomach you'll look heavier. Most importantly, just have fun because the more fun you have the better you will look!