Pregnant Amy (Duggar) King hits the beach in a bikini during her third trimester

Another Duggar is just about to pop!

Amy (Duggar) King and her husband, Dillon, are eagerly awaiting their first child — but before he arrives in October, they're enjoying one final vacation as a twosome. (They're calling it a "babymoon," an increasingly popular concept among parents-to-be.)

The 32-year-old showed off her bump in a bikini as she celebrated entering her third trimester.

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Amy Duggar King on Instagram
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Amy Duggar King on Instagram
Goodbye Feet! 😋😂
Nailed it!😂
@3130clothing is shaping up! The flooring is here, the paint is going on the walls and I'm getting more and more excited y'all for the Grand Opening!💕
We have decided we are not Applebees fans... and if you follow me and you work there or love eating at that restaurant I might just fib a little and say it's good when really it sorta just disappoints our tastebuds. 🍴 Oh but I love Fall lipstick colors and the drinks from Applebees!😏
Mightier than the waves of the sea is His love for you. Psalm 93:4
Fabulous ends in “us” coincidence? I think not!
Baby K's first concert was a hit! Special thank you to the Bova's for the tickets who are more like extended family to us! It's exactly what my heart needed. #saraevans #sudsinthebucket
I can't believe we are going to be parents!! Sometimes it just hits me out of no where! I get this extra - extra- burst of excitement especially when those little tummy flutters catch me by surprise in the middle of the day!! We can't wait to share the gender with everyone! What do you think baby K will be .. 💕 or 💙 comment below👇🏻!
Can you tell I'm 18 weeks preggo!? Being a #teamipartner keeps me SO motivated and active during my pregnancy! I ditched all sugary drinks and coffee and I'm staying super healthy with the little bun in the oven 😊 Not drinking a lot of caffeine was definitely hard at first. ( hello sweet tea lover)I had zero energy and got awful headaches until I started drinking the @teamiblends alive tea! It was a blessing and keeps me full of natural energy but in a healthy way. I don't need to add anything because I love the taste (and of course it's safe for pregnancy)! I love it so much I got a code to share. Use AMYKING for 25% off! #thankyouteami #tealover 🍵
Like mother like daughter!
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Amy is a cousin of Jessa, Jinger, Joy-Anna and all the other Duggars who make up the "19" in "19 Kids and Counting." She regularly appeared on the show during its original run.

Although they largely grew up together, Amy wasn't forced to abide by the same rules that her cousins adhered to. She was allowed to wear pants, for example, and date in a more typical way.

In 2014, Amy starred in her own special, "A Duggar Leaves Home," which documented her attempt to break into the country music industry. She doesn't really appear on the still-running "Counting On," but nearly 400,000 Instagram followers keep up with her via social media.

RELATED: Duggar couples and their children

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Duggar couples and their children
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Duggar couples and their children
We have some exciting news!!! Check out the link in my bio!
Garrett’s first snow ❄️⛄️ ran outside for a quick pic! #tryingtogethimtosmile
Happy news from the Seewald family! Baby #3 is on the way! Click the link in my bio to read our predictions! 😍
Part 2 of the ugly sweater party! . We ate way too much Italian dinner, then dove into desserts that were part of a baking competition. Next was a white elephant gift exchange, and then board games and a movie to bring the evening to an end.
💞@ben_seewald
We have BIG NEWS to share with everyone! See the link in my bio ☺️
A proper family photo || 📷: @_changemyname_
Happy Sunday ☺️
Morning walks with this guy! ☀️🌳❤️ Ahh! He makes me Smile!!😍 • • This adorable spring dress is from @mountainaireboutique 😍 • For 15% of your order use code JOY15!!
Happy 1st Birthday, Gideon Martyn!! We are so thankful for you and your bright smile that is contagious!!! Mommy and Daddy love you so much!! #1stbirthday #smashcake #somuchlove
Happy Mother’s Day to my lovely bride! She never has ceased to amaze me with her character and love for our Savior!
We enjoyed some cuddles and book time with Tía Amber and little adorable Seth this morning. Thanks for coming @amberschadt89
Everyone’s feeling well today and we were on the go running errands! 🚗#partner Love my new 👚 & 🥿 from @citrusandlemon Use my code: JILL to get 15% off your next order!! Photos courtesy of Israel (my 3 yr. old). 😊
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