See inside an extravagant Glossier, Crumble, and Starbucks-themed bat mitzvah

The bat mitzvah took place at the Regent Beverly Wilshire ballroom in Beverly Hills.

Friedman and Lainer spent a year planning the party, and it took them three days to set up the space.

"The ballroom was disgusting carpet. Nothing was pink. Nothing was cute," Friedman said. "So we definitely had to work hard to transform that."

They killed all the house lights and brought in a lighting designer who washed the room with a purple hue and added dimensional accents.

"Stella and her mom were talking about how everyone looks great with candlelight," Friedman said. "We wanted to recreate the experience of a candlelit room but without open flames all over the place."

"We had to pick the correct color Pantone of the drapes to be the exact shade that we needed," Friedman said.

They also covered the railings with pink, corrugated panels to match the walls of Glossier stores.

They created a shopping experience where the guests could pick out swag.

"We set up a little department store, which was so fun," Friedman said. "They got to go to the counter and pick out what they wanted."

Guests shopped at the mini department store, where they could choose between pajama pants or sweatpants and a zip-up hoodie or a crewneck sweatshirt. They also got socks, hats, and a tote bag.

Friedman and Lainer outfitted their staff in boiler suits, which they dyed pink to match the ones Glossier employees wore.

All the merch was branded with a special logo they made of Stella's name.

They covered a claw machine with "Stella" decals and filled them with goodies like stuffed animals, lip gloss, Glossier makeup bags, and cosmetic brushes.

"Whatever the kids can't get from the claw at the end of the night, we open it up and they raid it," Friedman said.

They wanted the activity to look like a tattoo parlor, so they brought in a professional chair. This elevated it "from being something that you would see at a fifth birthday party to something more adult and more edgy," Friedman said.

"We went to Crumble and picked up 500 boxes of cookies," Friedman said. "Then we had our attendants wear a Crumbl T-shirt and hats and pass them out."

They recreated a Starbucks store and had their drink vendor copy the company's specialty drinks.

"So they weren't really Starbucks drinks," Friedman said. "They were bootleg," Lainer added, laughing.

The shops were a surprise for Stella and came together like her own Main Street in Disneyland, Alexx said.

Everything had to be the same shade of pink, and that included the bar that served the adults' drinks.

Instead of traditional reception tables, they arranged seating areas inspired by the famous members-only club.

"Mom said that she had wanted the vibe to be like Soho House," Lainer said. "She's like, 'I want it to feel like a nightclub where instead of traditional seating, there's little vignettes of lounges.'"

Alexx wanted nontraditional floral arrangements and loves a natural, bohemian look.

"She really wanted something that was contemporary and artistic, just like Stella and her mom. They're both very fashion-forward," Lainer said.

The florals were done by Enso Creative, the same company that built the Crumbl and Starbucks stores, railing covers, and LED wall installations.

Stella was in "utter shock" when she saw the party come to life, her mom said.

"She was just overwhelmed with excitement. She was like, 'This is my dream,'" Alexx said. "It was a dream come true."

It was also an opportunity to celebrate her Jewish heritage, especially at a time when there's a lot of fear in the world, she added: "It was so beautiful to have my daughter so excited too and proud of herself, of who she is and her traditions and the payout of studying hard."

And now the giant Glossier Boy Brow and Cloud Paint bottles sit in her bedroom.