![Echosmith's Sydney Sierota on the Band's New Album and Her Viral Video With Fifth Harmony's Ally Brooke | Billboard – Billboard Echosmith's Sydney Sierota on the Band's New Album and Her Viral Video With Fifth Harmony's Ally Brooke | Billboard – Billboard](https://www.billboard.com/wp-content/uploads/media/Sydney-Sierota-performance-2015-billboard-1548.jpg)
Echosmith's Sydney Sierota on the Band's New Album and Her Viral Video With Fifth Harmony's Ally Brooke | Billboard – Billboard
![Fifth Harmony's Ally Brooke & BFF Sydney Sierota Head to Coachella Together: Photo 1081291 | Ally Brooke, coachella, Echosmith, Fifth Harmony, Sydney Sierota Pictures | Just Jared Jr. Fifth Harmony's Ally Brooke & BFF Sydney Sierota Head to Coachella Together: Photo 1081291 | Ally Brooke, coachella, Echosmith, Fifth Harmony, Sydney Sierota Pictures | Just Jared Jr.](https://cdn.justjaredjr.com/wp-content/uploads/2017/04/ally-sydney/ally-brooke-sydney-sierota-coachella-together-03.jpg)
Fifth Harmony's Ally Brooke & BFF Sydney Sierota Head to Coachella Together: Photo 1081291 | Ally Brooke, coachella, Echosmith, Fifth Harmony, Sydney Sierota Pictures | Just Jared Jr.
![Wantagh, NY, USA. 20th Aug, 2017. Sydney Sierota, Echosmith on stage for 2017 Hot 100 Music Festival - SUN, Northwell Health at Jones Beach Theater, Wantagh, NY August 20, 2017. Credit: Steven Wantagh, NY, USA. 20th Aug, 2017. Sydney Sierota, Echosmith on stage for 2017 Hot 100 Music Festival - SUN, Northwell Health at Jones Beach Theater, Wantagh, NY August 20, 2017. Credit: Steven](https://c8.alamy.com/comp/K06BR1/wantagh-ny-usa-20th-aug-2017-sydney-sierota-echosmith-on-stage-for-K06BR1.jpg)
Wantagh, NY, USA. 20th Aug, 2017. Sydney Sierota, Echosmith on stage for 2017 Hot 100 Music Festival - SUN, Northwell Health at Jones Beach Theater, Wantagh, NY August 20, 2017. Credit: Steven
![Sydney Sierota on Twitter: "I love you @AllyBrooke and you look AMAZING in #HCoXSydney 💕⭐️🌙✨⚡️💕 @HollisterCo https://t.co/gAySG2hVcF" / Twitter Sydney Sierota on Twitter: "I love you @AllyBrooke and you look AMAZING in #HCoXSydney 💕⭐️🌙✨⚡️💕 @HollisterCo https://t.co/gAySG2hVcF" / Twitter](https://pbs.twimg.com/media/Cz_hTRRUcAARz3I.jpg)
Sydney Sierota on Twitter: "I love you @AllyBrooke and you look AMAZING in #HCoXSydney 💕⭐️🌙✨⚡️💕 @HollisterCo https://t.co/gAySG2hVcF" / Twitter
![Fifth Harmony's Ally Brooke & BFF Sydney Sierota Head to Coachella Together: Photo 1081299 | Ally Brooke, coachella, Echosmith, Fifth Harmony, Sydney Sierota Pictures | Just Jared Jr. Fifth Harmony's Ally Brooke & BFF Sydney Sierota Head to Coachella Together: Photo 1081299 | Ally Brooke, coachella, Echosmith, Fifth Harmony, Sydney Sierota Pictures | Just Jared Jr.](https://cdn.justjaredjr.com/wp-content/uploads/2017/04/ally-sydney/ally-brooke-sydney-sierota-coachella-together-11.jpg)