Millie Bobby Brown showed her pride on being named UNICEF's newest Goodwill Ambassador on Monday in New York City.
The 14-year-old English actress wore a black T-shirt with a light blue UNICEF logo while headed to The Late Show with Stephen Colbert studio in Midtown.
The Stranger Things star tucked her black UNICEF tee into matching black jeans and also donned a black jacket.
Millie completed her outfit with black sneakers with blue trim and laces.
The actress earlier this month called on some of Hollywood's biggest stars to help her out for UNICEF's World Children's Day on Tuesday.
Millie shared a video that included stars and past Goodwill Ambassadors such as Liam Neeson, Orlando Bloom, Dua Lipa and Lilly Singh pledging support.
米莉还分享了由明星和往届亲善大使，像是Liam Neeson, Orlando Bloom, Dua Lipa 和 Lilly Singh等人共同出演视频，呼吁大家支持这项活动。
She also called on her 18 million followers on Instagram to sign a petition to protect children's rights.
Millie at age 14 has become UNICEF's youngest-ever Goodwill Ambassador.
'It's a dream come true to become a UNICEF Goodwill Ambassador. It's a huge honor to join such an impressive list of people who have supported UNICEF over the years,' Millie said in a statement released on Monday by UNICEF.
'I am looking forward to meeting as many children and young people as I can, hearing their stories, and speaking out on their behalf,' she added.