Early life

Knapp was born in Avonmore, Pennsylvania, the daughter of Marjorie and the late Bradford Elwood Knapp. She grew up in the Outer Banks of North Carolina before leaving home and moving to Los Angeles at the age of 18.

Knapp has two brothers.

Career

At age 18, Knapp moved to Los Angeles. There in 2008 she hosted a popular internet video series titled 'Project Lore', a show about the videogame 'World of Warcraft', and also worked as a model before breaking into acting. She appeared in Percy Jackson & the Olympians: The Lightning Thief as Aphrodite Girl and in Couples Retreat. In 2012, she starred in Project X as Alexis and Pitch Perfect as Stacie Conrad, the highly sex-crazed Barden Bella. She reprised her role in the latter's 2015 sequel.

Knapp also appeared in an episode of ABC's short-lived series Super Fun Night, written by and starring her Pitch Perfect co-star Rebel Wilson. Knapp also starred in the Tom Vaughan directed film So Undercover, as Taylor Jaffe. Alexis also has roles in TBS' Ground Floor, portraying Tori, a party girl, who catches up on her sleep at work the next morning. She did not return for the series' second season. Knapp was also cast in the Lifetime pilot Cinnamon Girl, before it got passed on. Knapp also stars in short film drama Wracked, as Melissa.

Personal life

Knapp dated actor Ryan Phillippe in the summer of 2010, though they split up in September that year. After the break-up, Knapp discovered that she was pregnant and gave birth to a daughter, Kailani Merizalde Phillippe-Knapp, in July 2011. Phillippe was present during the birth.

Filmography

Film

Year	Title	Role	Notes
2009	Couples Retreat	San Diego Dance Academy
2010	Percy Jackson & the Olympians: The Lightning Thief	Aphrodite Girl
2012	Project X	Alexis
2012	Pitch Perfect	Stacie Conrad
2012	So Undercover	Taylor Jaffe
2013	Vamp U	Samantha
2013	Cavemen	Kat
2014	The Dorm	Vivian Bloom/Violet	Television film
2014	Grace	Jessica
2014	The Anomaly	Dana
2015	Pitch Perfect 2	Stacie Conrad
2015	Urge
2015	One		Pre-production

Television

Year	Title	Role	Notes
2010	Look: The Series
2012	Like Father	Dylan	Unaired Fox pilot
2013	Cinnamon Girl: California Dreamin'	Lola Jones	Unaired Lifetime pilot
2013	Family Guy		Voice Episode: "Valentine's Day in Quahog"
2013	Super Fun Night	Clamantha	Episode: "Pilot"
2013-2014	Ground Floor	Tori	10 episodes

Music Videos

2009	Walking Away - Rick Vanderkleijn
2010	My Heart, Your Hands - Dommin

[ Source: Wikipedia ]