The duo released an album on the Sony BMG label in August 2005, entitled Ratu & Friends.

The first single of the album, "Teman Tapi Mesra" quickly rocketed Mulan's name as one of the most popular singers in Indonesia.

Peaking number 1 in Indonesia for several weeks, the single also gained commercial success on numerous radio stations in Malaysia and Singapore.

The album sold over 400,000 copies (certified Double Platinum) and established Ratu as the most successful female group at the time.

In the 2019 Indonesian general election, she was elected to become a member of the People's Representative Council for the 2019–2024 period for the Great Indonesia Movement Party (Gerindra), from electoral district (daerah pemilihan, Dapil) West Java XI, receiving 24,192 votes.