Sean Combs is stepping up to the plate and taking legal responsibility for his sixth child.

The rap mogul tells the Daily News that he's "committed to being a good father" to his 15-month-old daughter, Chance - even though the little girl was a factor in his break-up with longtime girlfriend, Kim Porter.

Over the past year, Combs' reps repeatedly denied that he'd fathered the child with Atlanta beauty Sarah Chapman. Combs now tells us he'd been holding off on acknowledging Chance as his blood until DNA tests had been completed.

"At first, I wasn't sure if this was my child," he said. "Now that it has become clear she is, I will take care of her for the rest of her life."