Like a Virgin is the second studio album by American singer-songwriter Madonna, released on November 12, 1984 by Sire Records. The album was re-released in 1985 world wide (not in North America) with the bonus track "Into the Groove." In 2001, Warner Bros. released a remastered version with two bonus remix tracks (this version did not include "Into the Groove"). The RIAA certified it Diamond on May 21, 1998, recognizing ten million shipments in the United States. Worldwide, the album has sold over 21 million copies.

The Immaculate Collection is the first greatest hits compilation album by American singer-songwriter Madonna, released on November 13, 1990 by Sire Records. It contains newly remixed versions of her greatest hits from 1982 to 1990, as well as two new tracks "Justify My Love" and "Rescue Me". The album includes eight of her twelve U.S. number one singles.
The RIAA certified it Diamond on October 11, 2001, recognizing ten million shipments throughout the United States, making it her best-selling album there. In the UK, the BPI certified it 12.00x Multi-Platinum, for sales of 3.6 million copies, making it the tenth best-selling album of all-time in the U.K, and making her the most successful female act in UK album chart history. The album is the best-selling compilation ever released by a female artist, with over 22 million copies sold worldwide.