NCIS: LA star Daniela Ruah shared an adorable photo on Instagram to celebrate her daughter Sierra's seventh birthday. The photo shows Daniela and Sierra smiling at each other while sitting on a window sill. In another photo, Daniela's husband, David Paul Olsen, is seen walking hand in hand with Sierra and their other child, River. Daniela expressed her love for Sierra in a heartfelt caption, wishing her the best and expressing pride in her. This post follows another one from Daniela celebrating her children's first day back to school.