LaLa is the second shōjo manga magazine that Hakusensha published. Series' that are serialized in LaLa is collected into tankōbon under the label, Hana to Yume Comics (花とゆめコミックス), together with other Hana to Yume serialized manga. Fanbooks, illustration books for the serialized series’ are published under the Hana to Yume Comics Special (花とゆめコミックススペシャル).
Readers of the magazine are 97% female while the other 3% are male readers. Its age demographic consists of 4% percent for under-13 readers, 23.4% for readers aged 13–17, 20% for readers aged 18–20, 13% for readers aged 21–23 while the remaining 29.7% of the readers are aged 24 years old and up. Readers aged 24 and up are the demographic of the highest percentage.
LaLa began its publication in July 1976 as a sister magazine to Hana to Yume as Hana to Yume LaLa (花とゆめ LaLa) which was published bi-monthly. The magazine's first publication featured Ryōko Yamagishi's Hana no Seitachi (花の精たち) and was priced at 290 yen. The magazine's first editor in chief was Nobumasa Konagai. The current editor in chief is Ikushū Ichikawa.
Then in September 1977, the magazine changed its frequency and became a monthly magazine. It then became its own independent magazine with a sister magazine of its own, LaLa DX.