Is this Bikini wearable for one afternoon?

I'm at my friends house and were goin to the beach but I forgert my bathing suit. She has a orange bikini here but the problem is is that I'm like 14 years old 5'7 almost 5'8 and she is like 5'2. Plus she has really small boobs :/ and mine are pretty big. I am in very good shape but i put it on and the bottom I somehow got one it just looks a little small but not bad an the top is kinda tight the strap is really tight because my boobs are a lot bigger than hers (there not huge but pretty big) and a little bit of the edge of my boobs hang out but it's the biggest thing she has and we really wanna go? Is this wearable just for the afternoon its pretty unconfortable but I dont mind? Its for 1 afternoon?