Rihanna has someone to stand under her "Umbrella" with. The singer is officially dating Shia LaBeouf! (Um, random much?! But really cute!) "It’s all the talk of the Indiana Jones 4 set,” an insider tells Perez Hilton.

The newly minted couple went public with their relationship this week when they went on a date -- a schmantzy meal at Kate Mantilini in Beverly Hills.