Jessica Biel may be a mom, but she’s a cool mom.

Just take a look at her Instagram snaps from her wild weekend in Las Vegas, where she was celebrating her future sister-in-law’s bachelorette.

“What happens in Vegas… comes home with you! Had a blast welcoming my new sister to the fam. Thank you @redrockcasino for taking such good care of us!” Biel said in the caption of an Instagram post celebrating Rose Muniz’s big weekend.

In the series of images, Biel showed off the entire bachelorette party as they posed up a storm in Vegas. Next, she shared a close-up selfie, which perfectly accentuated her timeless beauty. In a third snap Biel is seen playing the slots in a bathrobe and sneakers, as one does in Vegas. In her last photo Biel shared the incredible view of the Vegas strip she and the other ladies enjoyed while staying at the Red Rock.

And that wasn't all. Biel also shared a series of images from the party’s decadent dinner at Yellowtail, which specializes in fusing Japanese and Korean cuisine.

“Bachelorette to do list: Epic dinner at @yellowtaillv? Check. Dancing our faces off at @hakkasanlv? Check. Maybe still hungover?! CHECK. I love Vegas,” Biel wrote in the post’s caption.

Of course, the bride-to-be also shared her own images from the weekend. In one post Muniz shared the group’s hiking adventure through Red Rock Canyon, which sits just outside of Las Vegas.

Vegas isn’t just for celebrity bachelorettes — you can have the ultimate girls weekend in Sin City, too. Just follow Biel's very specific to-do list, or check out our travel guide. But maybe consider banning all cell phone photography for the weekend. Just a suggestion.