'If I Can't Have You' Singer: 'Memba Her? 'If I Can't Have You' Singer 'Memba Her? 3/3/2010 2:04 AM PT Yvonne Elliman is best known for her 1977 hit off the "Saturday Night Fever" soundtrack, "If I Can't Have You." Guess what she looks like now! Share on Facebook Share on X Beauty Memba Them Music