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Jennifer Aniston

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Jennifer Aniston married longtime beau Justin Theroux last night (at last!), which, as you might imagine, immediately puts white dresses on our minds.

We're not alone—speculation has been running rampant on the Internet all morning (natch). If there's anything we know about Jennifer, it's that she sticks with what she likes, so the best, most fool-proof way to make an accurate dress guess would be to look at her past red carpet choices.

Like the slim-fitting, all-over beaded Atelier Versace confection she wore to the 2015 Oscars in a glimmering nude hue (if she went cream or off-white for her wedding, we wouldn't blink twice). The column silhouette is one Jennifer has gone for time and time again (and we can see why...she looks damn good in it), which makes the iridescent Valentino gown she sported to the 2009 Oscars another extremely viable indication of what she wore on her big day.

We also can't get over how bridal-ready the star's gold-beaded Chanel couture gown was at the 2014 Emmys—the sort of simple but show-stopping look we could imagine her wearing to marry Justin. Finally, a plunging (and high-slit) number could have been the key for Jennifer to achieve her ultra-beach babe vibe, like the Burberry dress she donned to an AFI Life Achievement Award event in 2012.

Jennifer Aniston Wedding Dress

Getty Images; Jmendel.com

Back when the pair first got engaged, we predicted that Aniston might wear a slim-fitting Valentino confection an embellished bodice (wouldn't have even surprised us if she wore that oversized blazer paired with the look on the runway). We still think that Jennifer probably went with Valentino—or her other red carpet favorites, Saint Laurent and Versace—but there are some other strong dress contenders in terms of style, silhouette and, well, overall Aniston vibes.

And while we might never know exactly what she wore (she's a very private person after all), we imagine it might be something like these. Exhibit perfection: An expertly draped Jenny Packham confection featuring a plunging neckline and floor-sweeping skirt. And being the cool girl Jennifer is, we wouldn't be surprised if a pantsuit was in the mix (Carolina's slim-fitting version on the spring 2016 bridal runway would be highly fitting). A delicate cream-lace Badgley Mischka confection with flattering tiers might be the key, although we all had to pause when we laid eyes on J. Mendel's off-the-shoulder ivory dress with subtle ruching on the bodice.

What do you think Jen wore?
PHOTOS: Celebrity wedding dress predictions