J.Lo (album) was recorded by a singer.
`` Ai n't It Funny '' is a song recorded by American singer Jennifer Lopez . J.Lo is the second studio album and most successful album to date by American entertainer Jennifer Lopez . The Latin pop song , titled `` Ai n't It Funny '' was released as the album 's third single on June 20 , 2001 . `` Love Do n't Cost a Thing '' is a song recorded by American singer Jennifer Lopez for her second studio album , J.Lo ( 2001 ) .