<human>: Background: Miami Sound Machine is an American band of Latin-influenced music featuring the vocals of Cuban-born Gloria Fajardo Garcia (later Gloria Estefan). The band was established in 1975 originally as Miami Latin Boys by Emilio Estefan Jr. and became very successful after joining with Gloria Fajardo (Estefan) in 1977. The band had a number of albums and a string of hit singles until 1989. The band's 1985 album Primitive Love credited the band whereas their follow-up album Let It Loose in 1987 adopted the name Gloria Estefan and Miami Sound Machine.
Context: Following a massive world tour that lasted over a year (mid 1985-late 1986), tensions and rifts between original core members and zealous new members had taken their toll. Following that tour, both original MSM guitarist Wesley B. Wright and founding bassist Juan Marcos Avila had left the group, along with keyboardist Roger Fisher. Emilio was now taking a behind-the-scenes producer role and no longer performing live. What was left of the current MSM, plus new members (Jorge "George" Casas on bass, Clay Ostwald on keyboards, and guitarist John DeFaria), returned to the studio in early 1987. With only one other core member, "Kiki" Garcia, remaining, Gloria Estefan was given top billing and the band's name was changed to Gloria Estefan and Miami Sound Machine to jump on the sudden success of Gloria's unique vocal ability and bubbly personality on TV.  In late 1987, they released their next album, Let It Loose, and it went multi-platinum, with three million copies sold in the US alone. It featured the hits "Anything for You" reaching number 1 on the Billboard Hot 100, "1-2-3" making it to number 3, "Betcha Say That" to number 36, "Rhythm Is Gonna Get You" to number 5, and "Can't Stay Away from You" to number 6. "Can't Stay Away from You", "Anything for You" and "1-2-3" were all top charting singles on the Adult Contemporary hits as well.  Another world tour began and the group traveled for the first time to Europe, South America and an even more extensive tour in the United States, culminating in a finale with massive sold-out concert in their hometown of Miami, Florida, which was recorded and later sold on VHS. By 1988, founding member "Kiki" Garcia quit. With no other core members remaining other than Gloria herself, the "Miami Sound Machine" moniker was to be used from that point on for concerts and live performances only.  In 1988, after the worldwide chart success of single "Anything for You", her Let it Loose album was repackaged overseas as Anything for You. It became the band's first UK number 1 album, selling over a million copies. It was the biggest selling album of the year in The Netherlands, staying at number 1 for 22 weeks. The album also took top honors in Australia and Canada, launching Gloria Estefan to superstar status. CANNOTANSWER
Question: what was the biggest accomplishment/. Whats the answer?
<bot>: It became the band's first UK number 1 album,