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We really would like to know how many swimsuits Alessandra owns because she's been wearing a different (and ridiculously adorable!) suit every day of the year! (This two-tone piece is ále by Alessandra … but of course.)
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Leave it to Hailee to find a way to make a bikini both sweet (those bubble gum pink stripes!) and sexy (those high-cut bottoms!).
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Vanessa blended right in with her sandy surroundings on her sisters' trip to Mexico with her skin-tone skimpy one-piece.
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Listen up y'all, cause there's only one thing we can say about this photo of Fergie running on the beach: she's fergalicious.
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As if Christie's "woke up like this" skills aren't impressive enough (she's pictured here at 8:00 a.m.), we're here to remind you that she's 62 years old.
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ROMEE STRIJD & JASMINE TOOKES
The two Victoria's Secret models didn't let their skills go rusty during their Brazilian vacay — they practiced by having a sexy palm-tree-posing showdown.
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Kylie enjoyed a pool day during her vacation in Mexico with boyfriend Tyga and his son King Cairo, captioning her Insta "feel me?" Well, yes Kylie, we totally feel that matching your bikini to your choker will be the biggest swim trend of 2017.
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It's unclear if Mariah is in a shimmery gold gown or shimmery gold swimsuit, but it is 100 percent clear that Mariah is winning at Aspen hot tub style.
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Eva may have said there's "no looking back" to 2016, but we think she's about to turn a few heads in that red hot one-piece.
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Hilary makes the most of her flight delay by soaking up the last few hours in paradise with a nautical striped swimsuit and floral hair accessory.
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Bella's New Year's resolution must be "YOLO" because she looks incredibly calm and collected (in her Sunday Somewhere shades) while cuddling up to that shark!
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The Real Housewife of New York is jumping into 2017 via an envy-inducing Thailand vacation.
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The supermodel shows off her perfectly toned abs while taking a dip in the ocean during a family vacation to Florianópolis, Brazil.
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The supermodel's New Year's Eve reflections involve a Nelson Mandela quote about using time wisely, which she appears to be doing via a relaxing beach vacation and tiny pink bikini.
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JOAN SMALLS & DOUTZEN KROES
How many non-supermodels among us can say their post-New Year's Eve mornings looked like this?
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The model makes a major splash off the coast of St. Barts.
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The star just has to think about the sunshine to get into the vacation mindset, as she proves with this sultry Instagram.
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Leave it to a supermodel to make something as mundane as toweling off post-swim look, well, super.
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Librarians, take note: This is a great way to get people into reading.
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What more could a girl want besides a cute swimsuit, a fruity drink and a great view? Lupita seems pretty content.
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We'd love to get an invite to Ashley's "Do Nothing Club." We could be treasurer.
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The model takes the phrase "beach bum" very seriously.
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Olivia knows the ultimate beach coverup is a great pair of cutoffs.
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The star wore a tiny striped bikini - and her giant engagement ring - while on vacation in Mexico with fiancé Keven Undergaro.
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There's a lot to envy about Jamie's island vacation, but we'll start with this ridiculous-looking private pool.
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When in Brazil! The model vacations in traditional style with a high-cut bikini.
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She captioned this shot "bikini days," but we're wondering how many of a Victoria's Secret model's days aren't bikini days.
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A winter vacation always calls for long sleeves and ribbed sweaters, even when that vacay is on the beach. Just ask Jourdan, who somehow found a bikini that incorporates both.
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That's the dance of someone who found the perfect strapless bikini and spot-on beach accessories for her getaway.
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Yes, we thought this was an outtake of the Victoria's Secret Angel hard at work on a beachside photo shoot. But no, it's just Izabel hard at work giving us bikini envy in her red two-piece while on vacation in St. Barts.
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The actress definitely packed enough swimsuits for multiple beachside outfit changes, which are crucial for any tropical holiday vacation.
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The actress spends the holidays one way: total vacation mode.
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The model puts a whole new spin on the term "beach bum" with her sexy belfie and peach emoji caption.
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If celebrating reaching 1 million Instagram followers with a bikini-clad beach pic doesn't mark a promising start to 2017, we don't know what does.
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The sign of someone in full-on vacation mode? When a candid pic casually lounging around turns into a sexy mermaid pose (#nofilter needed).
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Joan does holiday Christmas card posing as only a Victoria's Secret model can — on the beach in a sexy bikini and tiny Santa hat.
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Suki really upgraded her holidays this year, wearing an adorable retro bikini instead of ugly sweaters and indulging in Christmas milkshakes instead of the typical holiday cookies.
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When you're riding on a yacht in a neon bikini, you know you've reach superstar status.
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This looks like a supermodel hitting every pose of her sexy beachside photoshoot, but what you're actually seeing is Joan "trying to figure out her next move." When your outtakes are as good as the finished product, you know you're a legend.
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Speaking of modeling legends, Gisele was spotted posing for photographer Mario Testino in a bright blue sporty one-piece. And proving our point, this candid photo might as well be from a flossy magazine.
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The singer rang in her 34th year on the beaches of Turks and Caicos in a risqué birthday suit - though not quite the one you’re thinking of! She chose an embellished red one-piece with peep-toe booties (you know, perfect for a long walk on the beach) for her celebratory ensemble.
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The Real Housewife is known for two things -- her lips and her ability to "own it" when she's caught up in drama. So her hubby Harry Hamlin gifted her something that celebrates both of those qualities. He gave her a lip-print bikini which naturally warranted her to share a mirror selfie saying, "Yes I'm 53. And yes I f—king own it."
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The 46-year-old knows the three most important things to have during a Miami getaway: cute bikinis, trendy wide-brim hats and rock-hard abs.
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The Don’t Be Tardy star went on a getaway to the Bahamas with her minor league baseball-playing boyfriend and packed nothing but skimpy, sexy bikinis in her suitcase.
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How can Padma be the host of Top Chef and still look that amazing in a bikini? There are some things in this life we'll just never know the answers to.
Irina Shayk Is the Ultimate Bikini Babe in Throwback to SI Swimsuit's 2010 Issue