Kelly, Dylan, Brandon and Andrea have gone back to school at West Beverly Hills High — sort of.

Just when you thought their Beverly Hills, 90210 days were behind them, Jennie Garth, Luke Perry, Jason Priestly and Gabrielle Carteris have been stirring up the nostalgia pot this summer by way of Old Navy TV commercials.

“Nothing’s better than the original 90210. There are so many devoted fans, that I wanted to do that,” Garth, 40, told People last Thursday.

“We were, like, in a hallway — it was a trip,” she added.

So what are they up to now?

Through ten seasons, fans of the popular drama watched their teen idols deal with heartbreak, domestic violence, drug use and other serious issues on screen, all while catching the attention of major award shows, including the Golden Globes and the Emmys.

The cast, most of whom are now well into their 40s (Brian Austin Green and Tori Spelling are both 39) have since branched off into varying levels of commercial success.

Garth has appeared on a number of successful TV series, including four seasons of What I Like About You (with Amanda Bynes) and two seasons on the revamp of 90210, which has also included appearances by fellow alum Shannen Doherty.

Priestley, 42, currently stars on the Canadian series Call Me Fitz, while Perry, 45, starred in the 2011 Priestly-directed Hallmark movie Goodnight for Justice. Two more installments have since been completed.

Meanwhile, Carteris, now 51, has lent her voice to several animated projects, including the Spider-Man 3 video game and the last season of the animated Batman: The Brave and the Bold series.

Ready to take a trip down memory lane (and see what the cast looks like these days)? Click through for photos of the Beverly Hills, 90210 cast, then and now.

The summer may not be over yet, but in the fashion world, the Fall shopping season is already upon us.

And leave it to Old Navy to have the most fall-inspired, star-studded commercial around.

In a brand new back-to-school commercial, the brand, known for its clever commercials and celeb appearances, parodies the ’90s favorite high-school melodrama, Beverly Hills 90210.

The ad features two of the shows most notable stars, Jason Priestley and Gabrielle Carteris, though most teens from the ’90s would know them better as Brandon and Andrea.

Although Priestley once told Access Hollywood, “I think Brandon did his time,” in response to whether or not he would return for the show’s 2008 spin-off, he is certainly reprising the role — if just for a minute — in the new commercial.

More than a decade after the show’s end, it’s great to see that the natural order of things is upheld. Brandon is just as hunky as ever, and Andrea remains pining over her eternally unrequited love.

After seeing Brandon and Andrea all grown up, we just had to dig back into the archives of our guiltiest TV pleasure and relive the torture of Brandon and Andrea’s will they or wont they relationship.

In this classic encounter, Brandon and Andrea discuss their almost being a couple, before Andrea quickly falls back into the friend zone.

Watch the clip below for a little bit of nostalgia on this summer Friday.

In March, Old Navy company also reunited Mayim Bialik and Joey Lawrence from the 90’s hit Blossom to promote their spring line “Old Navy Bee Bots”.