Ria Thielsch (born 25 August 1951 in Manokwari, Netherlands New Guinea) is a former model and an ex-member of the Dutch girl group Luv' (who replaced Patty Brard in 1980). She was officially introduced to the public with the release of the album Forever Yours and the single My Number One (a Top 5 hit in Benelux). March 1981 saw Luv's first break-up. The trio went through lineup changes and made several comebacks. Between March 2016 and December 2018, Ria was active as a Luv' singer again. She is of Indo (Dutch-Indonesian) descent.