Olivia Rodrigo celebrated her 19th birthday on Sunday night at a party with BFF Iris Apatow, plus Iris' new boyfriend Ryder Robinson (who…

Olivia Rodrigo Dresses as a Sexy Cowgirl at 19th Birthday Party with BFF Iris Apatow: Photo 4709585, Iris Apatow, Olivia Rodrigo, Ryder Robinson, The Kid LAROI Photos

Olivia Rodrigo Dresses as a Sexy Cowgirl at 19th Birthday Party with BFF Iris Apatow: Photo 4709641, Iris Apatow, Olivia Rodrigo, Ryder Robinson, The Kid LAROI Photos

Olivia Rodrigo Had BFF Iris Apatow By Her Side at 19th Birthday Party!: Photo 1339243, Iris Apatow, Olivia Rodrigo, Ryder Robinson, The Kid Laroi Pictures

Olivia Rodrigo Dresses as a Sexy Cowgirl at 19th Birthday Party with BFF Iris Apatow, Iris Apatow, Olivia Rodrigo, Ryder Robinson, The Kid LAROI

Olivia Rodrigo Had BFF Iris Apatow By Her Side at 19th Birthday Party!: Photo 1339202, Iris Apatow, Olivia Rodrigo, Ryder Robinson, The Kid Laroi Pictures

Olivia Rodrigo Had BFF Iris Apatow By Her Side at 19th Birthday Party!: Photo 1339234, Iris Apatow, Olivia Rodrigo, Ryder Robinson, The Kid Laroi Pictures

Olivia Rodrigo Had BFF Iris Apatow By Her Side at 19th Birthday Party!: Photo 1339270, Iris Apatow, Olivia Rodrigo, Ryder Robinson, The Kid Laroi Pictures

Olivia Rodrigo Dresses as a Sexy Cowgirl at 19th Birthday Party with BFF Iris Apatow: Photo 4709587, Iris Apatow, Olivia Rodrigo, Ryder Robinson, The Kid LAROI Photos

Olivia Rodrigo Had BFF Iris Apatow By Her Side at 19th Birthday Party!: Photo 1339272, Iris Apatow, Olivia Rodrigo, Ryder Robinson, The Kid Laroi Pictures

Olivia Rodrigo Had BFF Iris Apatow By Her Side at 19th Birthday Party!: Photo 1339222, Iris Apatow, Olivia Rodrigo, Ryder Robinson, The Kid Laroi Pictures

Olivia Rodrigo Had BFF Iris Apatow By Her Side at 19th Birthday Party!: Photo 1339236, Iris Apatow, Olivia Rodrigo, Ryder Robinson, The Kid Laroi Pictures

Olivia Rodrigo Dresses as a Sexy Cowgirl at 19th Birthday Party with BFF Iris Apatow: Photo 4709600, Iris Apatow, Olivia Rodrigo, Ryder Robinson, The Kid LAROI Photos

Olivia Rodrigo celebrated her 19th birthday on Sunday night at a party with BFF Iris Apatow, plus Iris' new boyfriend Ryder Robinson (who…

Olivia Rodrigo Had BFF Iris Apatow By Her Side at 19th Birthday Party!, Iris Apatow, Olivia Rodrigo, Ryder Robinson, The Kid Laroi