Jennifer Aniston and Justin Theroux shopping for their Bel Air mansion at furniture stores in Hollywood on October 29, 2012. Credit:

As evidenced by the whopping $20,000 they spent on lighting earlier this year, Jennifer Aniston and fiance Justin Theroux will spare no expense when it comes to making sure their 8500-square-foot Bel Air love nest reflects their style.

X17 obtained photos of the engaged couple continuing their interior design mission during a trip to Hollywood's high-end Blackman Cruz furniture store on Monday, Oct. 29.

"Jen and Justin spent time with two designers talking everything over," a store employee told Us Weekly Tuesday afternoon.

Though the pair didn't engage in any over-the-top PDA during their errand, "They seemed extremely happy. She is definitely the more gregarious of the two!"

Aniston, 43, may have been more chatty than her actor/screenwriter beau, 41, but it was clear from the get-go they were equally invested in choosing the right items for their home.

"Usually with a couple, there's one person that leads the way," the employee observed. "They were in it together. They really seemed to be enjoying this process."

As for their aesthetic?

The couple honed in on two brown, roomy leather chairs and an 18th-century armoire. Theroux also checked out photos of vintage mugshots. "He was really interested in those," the employee reveals. During their visit, Aniston also took some time to bond with the store's dog, Hudson.

"She loves her! She has been a client forever and always immediately asks for the dog," the clerk shared. "She was holding her like a baby and petting her forever."

It turns out Aniston has indeed been a Blackman Cruz devotee for quite some time; the employee also revealed that she used to shop there with ex-husband Brad Pitt.