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 20 of 25 ADVERTISEMENT () Start Slideshow View this post on Instagram A post shared by FINNEAS (@finneas) on Aug 14, 2018 at 3:59am PDT Share This Link Copy ← Use Arrow Keys → 20 Previous Next Start Slideshow Billie Eilish