Kim Kardashian's 20.5 Carat Engagement Ring: How Does It Rate With Other Celeb Bling?

Now that you've had a while to digest the fact that Kim Kardashian is engaged, it's time to get to the good stuff. No, we're not talking about the proposal, or the romance with fiance Kris Humphries—we're talking about the purported TWO MILLION DOLLAR diamond that's now sitting on her finger. Uh yeah.

According to People (where you can see her rock in all its multi-million dollar glory), Kris worked with jewelery maven Lorraine Schwartz to design the custom 20.5 carat bauble. While the couple didn't disclose the dollar value, TMZ didn't hesitate to report that it supposedly cost about half as much as her Beverly Hills mansion. Chump change, right?

Kim's not the first celeb to sport some serious engagement ring bling though. Check out the sparklers on these other recently affianced stars to see how they compare.

Kristin Cavallari: Kristin's fiance, Jay Cutler, certainly pulled out all the stops when he put this square-cut ring with a bedazzled band on her finger.

Natalie Portman: Nat's round-cut engagement ring doesn't need much drama to sparkle. The cut is simple and flawless (kinda like her!). Kudos to fiance Benjamin Millepied for this elegant selection.

Jessica Simpson: Jessica's man Eric Johnson opted to add a little color to her bling with a three-stone ring by Neil Lane, featuring a ruby and two diamonds.

Vanessa Minillo: Vanessa's been all smiles ever since Nick Lachey planted this lovely Bader & Garrin designed 4 carat ring on her finger.

Which of these rings is your favorite?