Kate Beckinsale gives us bikini body (and vacation) envy in scorching new pic

Kate Beckinsale is looking hot, hot, hot!

The actress showed off her killer bikini bod in a new vacation snap posted on Instagram on Monday.

WATCH: Kate Beckinsale Flaunts Incredible Figure in Sexy Bathroom Selfie

Slaying a strapless red-and-white bikini, the 43-year-old Total Recall star lies on a white net suspended over sparkling, blue water.

"Float float and some funny marks on your bum when you get up," the British beauty captioned the photo.

45 PHOTOS

Spring Break Celeb Beach Bods 2017

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Spring Break Celeb Beach Bods 2017

Don't know if it's physically possible for me to get any more tan....

Why not? 😏

#turksandcaicos #funinthesun

Yep

Best day!!

Pre-sunset 🌅😍 #currentsituation

Love this suit from @shoplunab !!!

Hey I look just like you here @luvismyreligion4

💋 @elizabethhurleybeach @fregateislandprivate

Float float and some funny marks on your bum when you get up

Happy oh happy

Forever in Denim. Thanks @VogueMagazine! #momjeans

Spring Break #2017 with the kiddies #lifeofnene

Welcome to the family!! @cashiethefrenchbulldog 🐶 Click link in my bio!! 👙🍩

super busy

You can get these beautiful long fabulous cover ups at SWAGG BOUTIQUE. Will post more about it later #lifeofnene 💋

X2 cuz why not! 🤷🏽‍♀️

Swingin' around ☀️

Salty kisses on my tan #girlonthecoast (Viv calls it the "coconut song") #GOLD

Peace and love #ready for any storm 🙏🏻🙏🏻🙏🏻

@lspaceswim photoshoot with mommy 🖤 📸@damir_k @pinkdustcosmetics

Loving the Sun☀️#yoga #vitamind #namaste

morning🌺

Together ❤

Oh Hi. Going from this to the NYC blizzard tomorrow. 😽 #ILOVELA

Sun baked #Maldives 👙🌞💦

☺️

Saltwater hair | 📸: JC

Love these days!!! #sundayfunday

Early morning session with @emerysurfboards @australia

Sunday funday with my #mcm 🍹👙☀️

I need you out in Jamaica relaaaxxin..😍😍

Make time for yourself #spaday 🌺Horizontal shower! Day spa para relaxar! #sunday #relaxing #aigaispa #tranquilidade #serenity

Today was booootyful ☀️

The beach is def my happy place and in ONE WEEK I'll have my toes in the sand again while listening to some country music at @tortugamusicfestival. Doesn't get much better than that. 🌊☀️🌴

Bye bye Nica 🌈 we love you @loveyogaspace

Having zero fun 🌊

Like my scarf??? @oprah and @talbotsofficial have teamed up for @dressforsuccess and that means...you can buy this scarf (and other items) and be supporting an AWESOME organization #talbotsxomag

We can go to the island 🌴🌺 & get you gold, no spray tan 🌞🙅🏽 #nicsflingb4thering @modernhonolulu #hawaii

😘 @elizabethhurleybeach @sixsenseszilpasyon

COACHELLA

This is the look of pure bliss! I'm so blessed! I'm so blessed! I'm so blessed! @acaciaswimwear #islandlife #6yearsin #grateful #muchneededbreak #fridayfeeling 📷 @eddiecibrian ❤

Feels like summer!!🌸 #luke

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In another post, on Sunday, Beckinsale rocked a colorful, flowery bikini and declared she was "happy oh happy."

NEWS: Kate Beckinsale Says She's 'Never Actually Had an Entire Glass' of Alcohol

So, what's the secret to her fabulous figure?

We're afraid it involves avoiding alcohol -- Beckinsale admitted she has never had a whole glass of "anything alcoholic," during a recent interview with Shape magazine.

60 PHOTOS

Winter 2016 Celeb Bikini Bodies

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Winter 2016 Celeb Bikini Bodies

Wades on the water... ⛵🛳🛥🍹🍹🍹

🌺

Launching into 2017... 💙🚀 #HappyNewYear

Have the honor and privilege to be part of my beautiful bestie @stephmatson #bridetribe Love this girl so much #miamiaintreadyforus #stephtorresbachelorette #bondgirlsintraining

Neon in Costa Rica, on my app.

Always laughing with this beauty ❤️❤️ #vacation #throwback to last night ☠️

Tree branch view...

Water💦Colors. #Retreat.

Laughing in bathrooms with friends

Just another day at the office 🦀💦👙 @swimsuitsforall #summerofyou #swimsuitsforallsummer17

chaos

Happy 2017 from us 💚

where i belong💙

Loving you so far 2017. ✌🏻

Stripe vibes 💋

Gone to the beach ... 🐚☀️🌈

Apres swim.

Soakin In the sun...#heaven #mexico

Mele Kalikimaka and happy holidays everyone! Sorry been away from social media over the holidays while spending quality time home with the ohana! I'm back now! Sending so much aloha and sunshine from #hawaii 🌊💋🌞

Enjoying my last few days of 2016 in Paradise. Yes yes I know, I'm back in Hawaii & I should just move here already. 📸 by the bday girl @allymaki

Needed a vacay so badly

je t'aime mon'amie

Good morning!!🐢🐟

First day of vacay and this is how I feel! 🙌🏼 #happyholidays🎄

Paraiso🌊🌊🐟🐢

🌞🌞🌞

On a island wit a pretty lil hitta on her bday 🌊 @nickiminaj 🎂😁

Birthday Vibes 🌴

Happening... Malibu! Photo shoot! Summer weather! Cali life...

Beach Hut 🌺🌴 #paradise

On a beach coming soon🎄🐨🌞

Time for ❤️️

Lord, I thank you for another year of life. #TurksAndCaicos Birthday vibes. Thanks for the 💟u guys. Right back atcha😛

HH brought me back a Lips💋Bikini. 💋💋💋💋💋💋💋💋 Yes my hair is different in this shot. And Yes I'm 53. And yes I fucking own it. 😜

👋🏼👋🏼 Hello world I'm on a secluded island and my phone just broke!!! what a perfect way to celebrate thanksgiving ☺️ don't call or text me.. just be with the people you're with! (Unless ur my dad, then call Jack for emergencies lol) Happy turkey day!!!🦃 Spread lots of love to everyone you see today.

New vlog from my week in LA LA Land is up! Link in bio 🙌

it's too cold in NYC, I want to be back here 🌺 @brooklynhawaii @jasminemullins_mua

Almost 30 and thirsty @hotelwailea

Don't be afraid to start over. It's a chance to rebuild your life & live the way YOU want. 📸by @therichardmarx #cabo 🇲🇽#50birthday #celebration 🙌🏼

Caught this today spear fishing!!! 🐟🐠the only reason I don't feel terrible is because I'm eating it for lunch 🌮🌮

I'm tired.

Meu bebê

Caboooo it's lit😉😈🙆🏻

Views.

This is living

Having a terrible time

Just us girls ... having fun ☀️💦💕 #foreveronvacation #Dubai #alebyalessandraswim