Popsugar Celebrity Billie Eilish Pictures of Billie Eilish and Finneas O'Connell Billie Eilish Pens Birthday Tribute to Brother Finneas O'Connell: "My Best Friend Forever" 1 August 2023 by Amanda Prahl View On One Page Photo 16 of 25 ADVERTISEMENT () Start Slideshow View this post on Instagram A post shared by BILLIE EILISH (@billieeilish) on Jul 30, 2018 at 10:07am PDT Share This Link Copy ← Use Arrow Keys → 16 Previous Next Start Slideshow Billie Eilish