Connie Francis, the wholesome pop star of the 1950s and ‘60s whose hits included “Pretty Little Baby” and “Who’s Sorry Now?” — the latter would serve as an ironic title for a personal life filled with heartbreak and tragedy — has died at age 87.

Her death was announced Thursday by her friend and publicist, Ron Roberts, who did not immediately provide additional details. Earlier this month, Francis posted that she had been hospitalized with “extreme pain.” Francis had gained renewed attention in recent months after “Pretty Little Baby” became a sensation on TikTok, with Kim Kardashian and Kylie Jenner among the many celebrities citing it.

“I’m flabbergasted and excited about the huge buzz my 1962 recording of ‘Pretty Little Baby’ is making all over the world,” she said in a video on TikTok, which she had joined in response to the song's unexpected revival. “To think that a song I recorded 63 years ago is captivating new generations of audiences is truly overwhelming for me.”

Francis was a top performer of the pre-Beatles era, rarely out of the charts from 1957-64. Able to appeal to both young people and adults, she had more than a dozen Top 20 hits, starting with “Who’s Sorry Now?” and including the No. 1 songs “Don’t Break the Heart That Loves You” and “The Heart Has a Mind of Its Own.” Like other teen favorites of her time, she also starred in several films, including “Where the Boys Are” and “Follow the Boys.”

The dark-haired singer was just 17 when she signed a contract with MGM Records following appearances on several TV variety shows. Her earliest recordings attracted little attention, but then she released her version of “Who’s Sorry Now?” an old ballad by Ted Snyder, Bert Kalmar and Harry Ruby.