Most women particularly the ones who keep a close track on celeb diamond ring styles and designs love big diamond rings. So, if you have the budget to buy a bigger diamond ring, then you should consider buying such a ring.   Some of the biggest diamond engagement rings belong to our favorite A-list Hollywood celebrities. The diamond engagement ring that Chris Zylka gifted to Paris Hilton was a massive pear-shaped diamond engagement ring. The cost of the 22-carat celeb diamond ring is estimated to be around 2.5 million dollars. Another famous Hollywood celebrity who owns a big diamond ring is Angelina Jolie. The ring that Brad Pitt gave to the actress when he proposed to her was a stunning 16-carat table-cut ring. The cost of the ring is estimated to be approximately 651,000 dollars. Former professional tennis player, Anna Kournikova, is another famous celebrity who owns a big diamond engagement ring. Actor and singer Enrique Iglesias gave two separate engagement rings to Anna. Apparently, the pink diamond ring of 11 carats is one of the biggest diamond engagement rings ever.