Deonlashawn Simmons, 36, is expected to spend the rest of his life in prison for the 2019 murder of Takaylah Tribitt.
Simmons pleaded to firearm and chronic offender enhancements after a jury convicted him of the murder in March.
According to court filings, Tribbitt, a fugitive, was discovered facedown, tied with cables, and surrounded by rubbish not far from Simmons’ family’s home.
Simmons and she had met five days before at a birthday party in Chicago.
Simmons has maintained his innocence and said Thursday he plans to appeal.
Deputy Prosecutor Doug Shaw, who called Tribbit’s death an “execution,” asked the judge to impose the maximum 105 year sentence, saying “that’s all the law allows us.”
Tribitt was a “defenseless child,” Shaw said in court.
Simmons’ attorney had asked for a 56-year sentence, with five years suspended in favor of probation.