Ben Higgins, Lauren Bushnell Celebrate Bachelor and Bachelorette Parties With Costars: Photos!

Ben Higgins Lauren Bushnell

Move aside: A Bachelor alum doing bachelor things! Ben Higgins and his fiancée, Lauren Bushnell, are celebrating big in Las Vegas ahead of their nuptials.

The future spouses have been sharing a ton of photos and videos from their joint bachelor and bachelorette festivities, which will surely continue through the long holiday weekend. They drank and let loose poolside on Thursday, October 6.

It's @laurenbushnell's bachelorette party!!!! ???#byebyebushnell

A post shared by Ashley Iaconetti (@ashley_iaconetti) on

I fell in love on #thebachelorette – with these guys… Reunited for Bens Bachelor Party in #vegas

A post shared by Tanner Tolbert (@tanner.tolbert) on

Higgins, 28, and the flight attendant, 25, were joined by several of their Bachelor Nation costars. Some lucky enough to snag an invite included Ashley Iaconetti, Jared Haibon, JJ Lane, twin sisters Haley and Emily Ferguson, Tanner Tolbert and Amanda Stanton, who got engaged to Andi Dorfman's ex-fiancé, Josh Murray, during season 3 of Bachelor in Paradise.

"It's @laurenbushnell's bachelorette party!!!!" Iaconetti captioned an Instagram photo of the gals on Thursday.

Later that night, Higgins and Bushnell branched off with their respective pals in two different limos. Each shindig involved booze, laughs and plenty of karaoke.

So cool ???? #snapchat #happilyeverafter #benandlauren #bachelorinparadise #thebachelor #lasvegas #bacheloretteparty

A post shared by ?Lauren Bushnell? (@laurenbushnellsnaps) on

Earlier this year, Higgins proposed to Bushnell during his season 20 stint on The Bachelor. Us Weekly exclusively revealed in June that they are filming an unscripted show about their life in Denver. The series, Ben and Lauren: Happily Ever After, premieres on ABC's sister network Freeform on October 11.

Although the two are having fun in Sin City, Bushnell said in August that the pair have yet to choose a wedding date. "We both kind of talked more about maybe a winter wedding. … Hopefully cameras will catch it, and I think that’s something that’s really cool, because I know nothing about wedding planning. I wish I could've watched someone else plan!" she told Entertainment Tonight at the time. "So hopefully you'll get to see that on the show. I would say definitely, but I don’t want to make any promises!"

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