Iggy Azalea scored some major jewellery at Christmas when her boyfriend Nick Young gave her a stunning Cartier diamond-encrusted heart necklace.

Days after she surprised him with a vintage Chevy convertible, the Los Angeles Lakers star left his girlfriend speechless with some impressive bling.

She posted a photo of her gift on Instagram.com on Friday (26Dec14) with the caption, "@swaggyp1 I love you infinitely."