Three kids and now engaged — that’s the status of “Teen Moms OG” star Maci Bookout, 25, who bachelorette-partied her face off in Vegas.

Bride-to-be Maci Bookout with friends Saturday at Liquid pool. (Tony Tran)

Charlie XCX sings Saturday at SLS hotel. (Getty Images)

Ashton Kutcher (in Bears regalia) with fellow actors Danny Masterson, Jordan Masterson, and Eric Dane at Intrigue nightclub Saturday. (David Becker/Getty Images for Wynn Las Vegas)

John Mayer at Encore Beach Club Saturday. (Tony Tran)

Mariah Carey and Jermaine Dupri get friendly during Trey Songz performance at Drai's nightclub. (Jesse Sutherland/Tony Tran Photography)

Scott Disick at 1 Oak nightclub in the Mirage hotel on Friday. (Denise Truscello/WireImage)

Tinashe and Charli XCX sing Saturday at SLS hotel. (Getty Images)

Tito Ortiz with girlfriend Amber Nichole Miller Friday at Encore Beach Club (Tony Tran)

Three kids and now engaged — that’s the status of “Teen Moms OG” star Maci Bookout, 25, who bachelorette-partied her face off in Vegas.

The Tennessee native put the Labor Day weekend to work on Friday by celebrating her pending nuptials with friends at 1 Oak nightclub.

Not one to let the limits of motherhood keep her down, she went to Aria’s Liquid pool on Saturday, then Bookout and friends kept the drinks flowing at Jewel nightclub.

When Bookout got cast on MTV at 17, she said she wanted to show pregnant teens “there are options out there to move forward with your life and still have goals.”

Goals are going well.

ALSO BATCHING IT

Australian actress Fely Irvine joked on social media she and a handful of friends got kicked out of the DJ booth at MGM Grand resort’s Wet Republic dayclub on Friday while she, in pink-bob wig, celebrated her bachelorette party.

The next day, she took her bikini buddies to the SLS hotel pool.

AND ANOTHER BATCH

“Chicago Fire” actors Joe Minoso, Yuri Sardarov, Lauaran September, and Charlie Barnett partied with “You’re the Worst” actor Destin Borges on Saturday at Jewel nightclub during Minoso’s bachelor party, while Jamie Foxx DJ’d.

SCOTT DISICK DRINKY DRINKY

Last year, Scott Disick was in rehab, this year he’s drinking.

Disick — life actor from “Kardashian” incorporated — went through some cocktails at Mirage’s 1 Oak nightclub on Friday.

This isn’t unusual. He’s made drinky drinky club appearances around America throughout 2016.

At 1 Oak, Disick (who answers to the nickname The Lord because he bought a British knighthood online) ate at Stack with friends, then, always the pro, he fulfilled red carpet obligations, talked to the crowd from the DJ booth a few times and left after 2:30 a.m.

Honestly, it must be hard for someone who’s been to rehab to have a job that puts him in the thick of booze parties constantly.

CORPORATE AMERICA

At SLS Saturday, Miss Universe 2012 Olivia Culpo and singers Charli XCX and Tinashe took part in a corporate branding for the PepsiCo brand SoBe.

The occasion: Culpo, Charli, and Tinashe helped launch new drink flavors. The singers performed.

On the red carpet, Culpo told London’s Daily Mail writer Sameer Suri: “I love Pilates … I love Barre … But I also like to enjoy in moderation bad things like ice cream.”

ASHTON, MCSTEAMY DO VEGAS

Ashton Kutcher and actor friends partied in Vegas over Labor Day weekend, fresh off of Kutcher’s door-to-door canvassing for Hillary Clinton in his native Iowa.

Kutcher was here with fellow “That ’70s Show” alum Danny Masterson, plus Jordan Masterson (“The 40-Year-Old Virgin”) and Eric Dane (“McSteamy” from “Grey’s Anatomy”).

They golfed. They ate sushi at Andrea’s in the Wynn. They did Intrigue nightclub.

HOW MANY ARE IN YOUR PARTY, SIR?

John Mayer took an entourage of eight people to MGM’s Hakkasan nightclub on Friday, staying until 2 a.m., hearing the music of DJ Steve Aoki, who has been known to roll with dozens in his entourage, not that it’s a contest.

The next day, Mayer and actor Stephen Merchant took three friends to Encore Beach Club for margaritas and to pose for fan photos, while Alesso DJ’d.

Drai’s resident performer Trey Songz ate at rival Hakkasan restaurant Saturday with his entourage: roughly 20 friends.

R&B singer Jay Sean took a party of eight friends to Encore Beach Club during Zedd’s DJ set on Friday and stayed till 5:30 p.m. (pretty late).

And former UFC star Tito Ortiz took 10 people to Encore Beach Club on Friday. One of them was girlfriend Amber Nichole Miller, in a thong. They stayed till closing.

These entourage numbers may sound big, but several years ago at the Palms’ N9NE Steakhouse, a star showed up with 90 friends.

IS MARIAH SINGLE OR WHAT?

Caesars Palace headliner Mariah Carey drank Belvedere and Ruinhart Rose with Jermaine Dupri at a VIP booth next to the Drai’s nightclub stage while R&B star Trey Songz sang. They looked friendly.

Carey has been engaged to billionaireJames Packer. Tabloids recently claimed she jealously threw out his laptop after he played a Beyonce song (to get her in the mood) and then ran out of the room. But her rep told those gossip hounds their stories were “completely fabricated and foolish.”

SIGHTINGS

On Friday, Kevin Hart didn’t just host at Tao nightclub in the Venetian, he stood on the DJ booth and danced and sang to every song.

Also in the crowd to watch Hart’s dancing: Jermaine Dupri and Toronto Raptors’ Kyle Lowry.

“America’s Got Talent” judge Howie Mandell saw “Absinthe” Saturday after performing Friday at the Mirage.

On Saturday, Hart ate at Beauty & Essex before hosting at Marquee nightclub, where Travis Scott rapped.

Floyd Mayweather took friends to see Yo Gotti rap at Tao nightclub in the Venetian on Saturday.

Hip hop great J. Cole ate with friends Saturday at Lavo in the Palazzo.

Motivational entrepreneur Tony Robbins hit balls at Topgolf on Saturday.

Vancouver Canucks goalie Ryan Miller and retired hockey buddy George Parros ate burgers at the Topgolf ultra-range pool bar and hit balls Friday.

Doug Elfman can be reached at delfman@reviewjournal.com. He blogs at reviewjournal.com/elfman. On Twitter: @VegasAnonymous