She began training in voice, dance and acting at the Annie’s Playhouse School of Performing Arts in Far Hills, New Jersey at the age of six. She has appeared as a featured vocalist in several Kids of the Arts, Broadway Kids and Time To Shine productions in New York City.
Donnelly co-starred as Ash in the 2013 Netflix series Team Toon. She was the American face of Clean and Clear's 2015 Awkward to Awesome campaign, originated the role Mary in the theatrical workshop of Trevor: The Musical, and was the understudy for the role of Louisa von Trapp in the NBC television special The Sound of Music Live!. Donnelly has also appeared in several episodes of ABC’s What Would You Do?, and was on Sesame Street and Celebrity Ghost Stories. Donnelly also appeared in the feature film The Broken Ones that premiered at the 2017 SOHO International Film Festival.
She has played the starring role Taylor Otto in the ABC sitcom American Housewife since 2016.
|2013||Celebrity Ghost Stories||Young Jacklyn||1 episode|
|2013||Team Toon||Ash||Main role|
|2015||Future Shock||Annie||Unsold television pilot (Nickelodeon)|
|2015-2016||Primetine: What Would You Do?||[various]||3 episodes|
|2017||The Broken Ones||Lilly Kelly||Film|
|2016-present||American Housewife||Taylor Otto||Main role|
|2018||Zombies||Addison||Disney Channel Original Movie|
|2020||Zombies 2||Addison||Disney Channel Original Movie|
- Her height is stated to be 5’3″.
- She's 20 years old currently.
- She was born in New York City, New York.
- She is an only child.
- Her favorite color is orange.
- Meg has a celebrity crush on Chris Hemsworth, the actor who plays "Thor" and is a fan of the Marvel films.
- Her favorite TV show is "Spongebob Squarepants".
- Meg can speak in Japanese and went to Japan on July 2018.
- Her first solo single is called “Smile” and she also recorded a Japanese version of the song.
- She has a necklace of her name written in katakana.
- One of the things that inspired Meg to be a performer was "SNL" (Saturday Night Live).
- Meg's favorite Disney Channel Original Movie (DCOM) is "High School Musical".
- Ariel from "The Little Mermaid" is the Disney princess she likes the most.
- She also said she loves mermaids because of the character, the Australian TV show "H2O" and even thought of being a mermaid during her childhood.