Beverley began her acting career at the tender age of 4, after being discovered by a talent agent while throwing a temper tantrum at a shopping mall. She appeared in many commercials, most notably in an Oscar Meyer's hotdog commercial. She befriended fellow child actress Judith Barsi during this time, and both often competed for the same parts.

Her first television role was on the sitcom "Big Brother Jake" in 1990. Afterward she appeared in many TV movies and made guest appearances on shows like Melrose Place and Baywatch.

Her first major film role was in The Crow: City of Angels, playing teenaged drug-addict Grace. During the filming of the Crow, in 1996, she auditioned for the role of Mary Camden in a new family drama, 7th Heaven. Producers initially turned her down as they didn't think she was suitable to play Mary. However, when she read for the part of sister Lucy, she was instantly cast.

7th Heaven was a huge success, lasting for 11 seasons, beating both The