<p>The couple visited a luxury jewellery shop in New York City, a day after the heiress turned 30, reported People magazine online.<br /><br />"They shopped for engagement rings. They were really cute together. Paris was making comments about the rings and joking that her ring has to be at least 24 carats," said a source.<br /><br />Hilton, who began dating the nightclub owner last summer, left the store with a very special birthday present.<br /><br />"She walked out sporting a USD 25,000 white gold and black diamond encrusted ring," the source added.<br /><br />The socialite has previously been engaged to model Jason Shaw and Greek shipping heir Paris Latsis.</p>
<p>The couple visited a luxury jewellery shop in New York City, a day after the heiress turned 30, reported People magazine online.<br /><br />"They shopped for engagement rings. They were really cute together. Paris was making comments about the rings and joking that her ring has to be at least 24 carats," said a source.<br /><br />Hilton, who began dating the nightclub owner last summer, left the store with a very special birthday present.<br /><br />"She walked out sporting a USD 25,000 white gold and black diamond encrusted ring," the source added.<br /><br />The socialite has previously been engaged to model Jason Shaw and Greek shipping heir Paris Latsis.</p>