Jennifer Ann McAllister (born July 9, 1996),[1] also known by her former pseudonym and YouTube username jennxpenn, is an American internet personality, actress and comedian.

[17] That same month, she partnered with the nonprofit organization Our Time, releasing a video telling her viewers aged eighteen or above to register themselves to vote in the United States.

[18][19] At the 2015 Playlist Live convention, it was announced that McAllister and fellow YouTuber Lauren Elizabeth Luthringshausen would be starring in a film titled Bad Night, which serves as her acting debut.

[23][24] In an interview with Entertainment Weekly, she described the project as an "amazing experience" and that seeing herself on screen left her "cracking up at the fact that this is a real thing because I can't take myself seriously.

"[22] Also in 2015, McAllister made her writing debut with the autobiography Really Professional Internet Person,[25][26] which was released in August 2015 and became a New York Times Best Seller.

[27] In February 2016,[28] it was announced that McAllister would portray the leading role of Andie Fixler in the YouTube Red original series Foursome.

[48] In November 2020, in a video titled "addressing your assumptions about me...",[49] McAllister publicly came out as bisexual, saying she had been identifying as bi in her personal life since she was 19 years old.