New Delhi, Oct. 31 -- After an 18-year hiatus from sharing the screen, former Disney Channel stars and childhood best friends Selena Gomez and Demi Lovato have officially reunited.

However, this highly anticipated reunion, which has sent fans into a nostalgic frenzy, is not for a television reboot or a musical collaboration, but for a major beauty campaign.

The iconic duo has teamed up to promote Gomez's cosmetics empire, Rare Beauty.

In a newly released YouTube video titled "Checking In," there is a nostalgic, rapid-fire Q&A session set in a stylised, early-2000s teenage bedroom. Selena Gomez and Demi Lovato open the video by jokingly explaining their 18-year hiatus, claiming they simply "lost our laptop" and just found it.

The video...