What type of bra should I get?

Ok, I have big boobs they are 38 D or DD. I want a bra that will make my boobs smash together and create a crease in the middle, and it seems like no matter what push up bra I try on it just lifts them up, it doesn't create a crease in the middle, and I even went to Victoria's Secret to buy these push up bras. My question is should I get a push up bra to get that particular look? or should I get a Plunge Bra? Which one creates that look? also if you can direct me to a specific bra that will create that effect, will be greatly appreciated. Thank you.