On Thursday, the Vanderpump Rules star, 39, was spotted at the sandwich shop she opened with Katie Maloney earlier this year.
Earlier this year, it was announced Ariana would take over from Sarah Hyland as host of Love Island USA, the American adaptation of the hit British dating reality show.
After six weeks of filming the show in Fiji, Ariana made it back to Los Angeles as the reality TV star was photographed at her popular sandwich shop on Wednesday.
She looked happy and relaxed in a pair of pinstripe blue and white trousers and a white crop top, before greeting a surprise A-list visitor.
Seth Rogen and his wife Lauren Miller were seen standing in line at the West Hollywood eatery, before being photographed in conversation with Ariana and Katie.
The Queens of Bravo Instagram account shared a grainy paparazzi photograph of Seth laughing and talking to the co-founders, with a caption that read, "#PumpRules superfan Seth Rogen visiting Something About Her with Katie and Ariana [crying face emoji]."
Longtime Vanderpump Rules will remember the Knocked Up actor's cameo on the show in 2015.
Seth, who was filming The Night Before at the time, put his own twist on the famous intro segment.
Seth's wife Lauren also credited the long-running Bravo TV show for helping her and Seth cope with the grief of losing their dog Zelda in an Instagram post last December.
Alongside pictures of her, Seth, and their beloved pet, she wrote, "This has been a YEAR. To be honest, losing Zelda hit me really hard. Harder than I even thought it would.
"Luckily, I was able to add in a lot of joy on top of all the sadness I was feeling," she continued. "Time with family and friends, trips to Italy and France, our always epic Thanksgiving, and of course, Vanderpump Rules - which we watched all over the world and provided the best distraction when the waves of grief came crashing in.
"Those people have done a real service!" Lauren concluded.
Ariana and Katie celebrated the opening of Something About Her in May this year.
The U.S. Sun exclusively revealed that the launch was preceded by a long period of setbacks and delays, including extensive renovations and various health department issues.
"It's one thing after another, so that's why the date keeps getting pushed back. It has nothing to do with the owners' busy schedule."
Shortly after, Ariana flew to Fiji to film the latest season of Love Island USA, which kicked off on June 11.
As Ariana's professional commitments kept her away from Something About Her for extended periods, The U.S. Sun revealed staff at the cafe were "disappointed fans can't see her more or even have her witness the store's success firsthand."
Since opening day, there has consistently been a long line of fans eager to try Something About Her, with wait times ranging from 30 minutes to an hour.
Staff also learned of fans' "disappointment" over not being able to meet Ariana after they traveled long distances and waited in line.
A representative for Ariana did not return The U.S. Sun's request for comment.
