Rihanna is all smiles, laughing and chatting it up in her first sighting since welcoming her third baby into the world.

Catch the clip — Rihanna was riding shotgun in Beverly Hills with a friend Tuesday, clearly having a blast, hand over her mouth as she tried to stifle those giggles.

Ever the people-pleaser, Rihanna peeked out the window to toss a cute little wave to the photog before cruising on with her night.

TMZ first reported Rihanna and A$AP Rocky welcomed baby girl Rocki Irish Mayers a few weeks ago, on September 13.