Congratulations, Daniela Ruah! It's a girl!

NCIS: Los Angeles' Ruah and husband David Olsen welcomed their second child on Sunday - a little baby girl by the name of Sierra Esther.

"Apparently, she thought Labor Day weekend meant LABOR day weekend," Ruah joked as she shared Sierra's first photo. "Look who showed up 3 weeks early!"

Married in 2014, Ruah and Olsen are also the proud parents of River, 2. The youngster appears beside his baby sis in the hospital, quickly adapting to his new role as a big brother.

 Apparently she thought Labor Day weekend meant LABOR day weekend... Look who showed up 3 weeks early! On September 4th we welcomed little Miss Sierra Esther Ruah Olsen! She entered the world in her own way- breeched! I was a good candidate to deliver her naturally so I needed to find a doctor in LA who would know how to do it. Fortunately I found one of the few... Healthy & happy mommy & baby walked out of the hospital 24hrs later. I had an OB and doula assisted birth at Cedars Sinai, and the #love and #support of my wonderful #hubby ❤️ This photo is the perfect representation of everything I've ever wanted. #Family #ExhaustedbuthighonLife #Amothersrighttochoose #InformedBirth @binibirth --- Pelos vistos ela achou que o Dia do Trabalhador (nos EUA) significava dia do TRABALHO DE PARTO... Olha quem decidiu aparecer com 3 semanas de antecedência! No dia 4 de Setembro demos as boas vindas à menina Sierra Esther Ruah Olsen! Deu entrada no mundo da sua própria maneira- de apresentação pélvica! Eu era boa candidata para dar à luz naturalmente nesta situação e por isso tive de encontrar um médico em Los Angeles que ainda o soubesse fazer. Felizmente encontrei um dos poucos... Mamã e bebé saíram do hospital saudáveis e felizes 24 horas depois. Foi um parto assistido por um obestetra e uma doula no Cedars Sinai, e o amor e apoio do meu maridão ❤️ Esta foto representa tudo o que sempre quis. #Família #Exaustamasfelizdavida #ODireitodeescolhadamã

A photo posted by Daniela Ruah (@danielaruah) on Sep 7, 2016 at 2:51pm PDT

 
Although Sierra was in breach, Ruah had the opportunity to follow through with a safe, natural birth. All went well, and within 24 hours the little family was back at home.

"[Sierra] entered the world in her own way- breeched!" the actress explained. "I was a good candidate to deliver her naturally so I needed to find a doctor in LA who would know how to do it. Fortunately I found one of the few... Healthy & happy mommy & baby walked out of the hospital 24hrs later."

Not only does Sierra have a built-in playmate thanks to River, she will also get to hang with her newborn cousin, Esme. Serving as both Ruah's NCIS: LA costar and brother-in-law, Eric Christian Olsen also welcomed a baby girl this summer with his wife Sarah Wright. Barely a month older than Sierra, Esme will grow up alongside her little cousin just as her older brother, 2-year-old Wyatt, is growing up with River.

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