girly (n.) Look up girly at Dictionary.com
girlie, "little girl," 1860, from girl + -y (3). Another diminutive was girleen (1836) with an Irish ending.
girly (adj.) Look up girly at Dictionary.com
"girl-like," 1866, from girl + -y (2). Reduplicated form girly-girly (adj.) is recorded from 1883; as a noun from 1882.