Hugh Hefner's Fiance Crystal Harris Shows Off Huge New Engagement Ring (PHOTO)

When Crystal Harris walks down the aisle with Playboy founder Hugh Hefner, we know one piece of jewelry she'll surely be wearing -- her massive engagement ring.

Playboy founder Hugh Hefner and his bunny fiancee, Crystal Harris, are set to tie the knot soon -- and Hef has given Harris a MASSIVE engagement ring.

On Monday, Harris tweeted, "My beautiful ring from @hughhefner" and posted three photos of her huge new diamond.

The couple was engaged once before, but Harris called off the wedding in 2011, days before the couple was set to wed. Her second ring appears slightly larger than the first one Hefner gave her, which Harris reportedly reportedly sold after she broke off the engagement.

Hefner and Harris were seen picking up a marriage license earlier this month, and reportedly plan to wed on New Year's Eve at the Playboy Mansion -- if Harris doesn't get cold feet again. See Harris' engagement ring below.

Readers tweeted their marriage advice for Hefner and Harris. See what they wanted to share with the couple in the slideshow below.

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