The poem "She Walks in Beauty" by Lord Byron describes a beautiful woman. Byron was inspired to write it after seeing his cousin at a party, struck by her dark hair and fair skin. The poem uses nature imagery and contrasts of light and dark to portray her physical beauty. It also suggests she has inner beauty, with references to her sweet and innocent thoughts and pure heart. Byron employs literary devices like similes, metaphors, personification and alliteration to vividly portray the woman's beauty and convey the theme that her external and internal qualities are in perfect balance and harmony.