lovely (adj.)

Old English luflic "affectionate, loving; loveable;" see love (n.) + -ly (1). Sense of "lovable on account of beauty, attractive" is from c. 1300; in modern use "applied indiscriminately to all pleasing material objects, from a piece of plum-cake to a Gothic cathedral" [George P. Marsh, "The Origin and History of the English Language," 1862]. As an expression of delight, 1610s.

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Definitions of lovely from WordNet
lovely (adj.)
appealing to the emotions as well as the eye;
lovely (adj.)
lovable especially in a childlike or naive way;
Synonyms: adorable / endearing
lovely (n.)
a very pretty girl who works as a photographer's model;
Synonyms: cover girl / pin-up