Being 'in' on the proposal plan before your hubby-to-be pops the question certainly has its benefits. You can make sure your manicure is on fleek for that engagement ring selfie, of course. And you can also have a hand in choosing that beautiful bauble, thereby ensuring it's a sparkler you'll want to wear forever....Or that it shares the same diamond cut as the engagement ring of your favorite celebrity!
Are you a Serena Williams or Pippa Middleton kind of girl? That is, is an oval-cut sparkler more up your alley or is an Asscher-cut more your speed? Behold, the ten most popular diamond cuts—and famous ladies who wear 'em! So now when you hit the jewelers, you can tell the salesperson, "I want what Jennifer Aniston has!" (Minus the $500,000 price tag.) How cool would that be, right?
Alison Brie, Miley Cyrus, Mila Kunis, Kate Mara, and Felicity Jones all rock classic round-cut engagement rings.
Besides the circular center stone, Brie's rose gold ring also features a pavé double halo that we're obsessed with.
Since reportedly getting back together with her former fiancé Liam Hemsworth, Cryus has been wearing her Neil Lane engagement ring once again. It also features a round-cut dreamy diamond with 18K gold floral motifs.
Ashton Kutcher also kept things traditional when he proposed to Mila Kunis with a round-cut diamond sitting on a simple gold band.
Kate Mara's sizable round-cut stone from fiancé Jamie Bell was the perfect mix of traditional and chic.
It was rumored actress Felicity Jones was engaged to beau Charles Guard, and it seems to be true! During Glamour UK‘s Women of the Year Awards, the beauty stepped out flaunting a gorgeous ring that featured a large round-cut diamond set on a thin gold band.
John Cena custom-designed Nikka Bella's five-carat engagement ring, which features a Tiffany cut diamond that represents their four-year relationship. The sparkler is set in a platinum band.
Blake Lively, Julianne Hough, Kate Middleton, and Serena Williams all wear opulent oval engagement rings.
The rose gold sparkler Ryan Reynolds gifted Blake Lively features a pink oval-cut diamond and split shank band.
Meanwhile Julianne Hough is practically dancing over her special sparkler. "I never thought I would be that girl to be like, 'Look [at my ring!]' but it is pretty awesome," the Dancing with the Stars pro told E! News of her five-carat ring.
The jaw-dropping oval-cut sapphire Prince Charles gifted his bride previously belonged to his late mother, Princess Diana.
Following Serena Williams's engagement to Reddit cofounder Alexis Ohanian, it took quite a while for the athlete to debut her sparkler—but here it is! The ring features a sizable oval-cut diamond, which sits in between two small diamonds, and is set on a silver band.
Beyoncé, Mariah Carey, and Amal Alamuddin are toting epic emerald-cut rings around Tinsel Town.
Beyoncé's 18-carat and Amal's 7-plus carat diamonds are both impressive, but...
Mariah Carey's emerald-cut stone tilts the scales at a whopping 35 carats. (Yes, really.)
Kim Kardashian, Bar Refaeli, and Sofia Vergara's hubbies all proposed with cushion-cut sparklers.
Kardashian's "kushion"-cut ring weighs in at an impressive 15 carats and set Kanye West back a cool $8 million.
And Refaeli's bauble is as beautiful as the supermodel wearing it! Her cushion-cut diamond solitaire sits on a thin yellow gold band.
Meanwhile, Vergara's sparkly stone matches her personality to a tee (i.e. it's BIG!).
Kate Bosworth, Hilary Duff, and Snooki are three famous ladies who've had regal rings with princess-cut diamonds.
Michael Polish gifted the beautiful Bosworth a dazzling diamond that totes a 1920s Art Deco design.
Hilary Duff may no longer be hitched to her former sweetheart, hockey player Mike Comrie, but when he popped the question, Comrie gave Duff a sparkly 14-carat princess-cut stone worth a reported $1 million.
And for Jersey Shore royalty, Snooki, nothing less than the queenly cut would do. Hers is set in a band featuring two-carat round-cut diamonds as well.
When it comes to the more unique marquis cut, Portia de Rossi, Ashlee Simpson, and Christina Milian are all fans of the stylish stone.
Ellen DeGeneres proposed to her wife, Portia de Rossi, with a three-carat stone that sits horizontally on its band.
Diana Ross's son, Evan Ross, also hit all the right notes when he proposed to singer Ashlee Simpson with a pink vintage-style engagement ring by Neil Lane.
And although sultry singer Christina Milan eventually called off her engagement to Jas Prince, we're still dreaming of her marquis-cut sparkler.
Katherine Heigl, Victoria Beckham, and Elisha Cuthbert all have pretty pear pieces from their hubbies.
"It's ridiculously big," Katherine Heigl told Cosmopolitan of her pear-cut diamond. That's for sure!
Meanwhile, Beckham's 15 to 17-carat pear-cut diamond is actually her second special sparkler from her sweetheart. (Of course, the woman has two engagement rings...)
Elisha Cuthbert's big and beautiful pear-shaped solitaire is set in a platinum band.
Asscher-cut diamonds are certainly beloved amongst the celebrity set, with A-listers Jessica Alba, Gwyneth Paltrow, and Pippa Middleton rocking the stone.
Alba's five-carat asscher-cut sparkler from her sweetheart, Cash Warren, stuns with its diamond-filled band.
Before her and Chris Martin's "conscious uncoupling," Gwyneth Paltrow made our eyes pop with her eight-carat diamond ring with pavé halo.
See More: [50 Classic Engagement Rings for the Timeless Bride](http://www.brides.com/wedding-dresses-style/2012/06/classic-engagement-rings#slide=1
Pippa Middleton's hubby, James Matthews, popped the question with an art-deco inspired ring, which featured an Asscher-cut center stone surrounded by diamonds in a white gold or platinum setting. Not bad.
Only one of these lovely ladies is still with her hubby, but Jennifer Aniston, Khloe Kardashian, and Drew Barrymore all wore radiant-cut engagement rings at one point or another.
R.I.P. Khloe and Lamar, and Drew and Will... We'll never forget your gorgeous sparklers.
Jennifer Aniston, on the other hand, is still wearing her dazzling diamond from hubby Justin Theroux—that cost a half million dollars, we might add!