Is it weird to wear a strapless dress with a bra that has straps?

It would probably make more sense if I told you I was 13 so i don't really wear strapless bras.. For my dads wedding they bought me a pink strapless dress but I don't have any strapless bras. Would it look strange if i went to a wedding and my bra straps were showing? I have a bra with black straps and my dress has a strip of black around the waist would that look okay? I also have a bra with pink straps but its a darker pink. What do you think I should do? I probably won't be able to buy a new bra plus I'm not sure if they make strapless for kids (I wear kid sizes)