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Khloe Kardashian is a mom.

The reality star welcomed her first child, a baby girl, with boyfriend Tristan Thompson on Thursday, April 12, multiple sources confirm to PEOPLE.

TMZ was the first to break the birth. According to The Blast, Thompson was present for the birth of their daughter.

The news comes following allegations that Thompson was seen kissing multiple other women and a source calling him a “serial cheater”.

While this is the first child for the 33-year-old reality star, Cleveland Cavalier’s Thompson, 27, is also dad to 16-month-old son Prince Oliver from a previous relationship.