We know that Beyoncé gave birth to twins sometime last week, but the babies are still in the hospital.
According to TMZ, Bey didn't go full term, so the premature babies have been "under the lights" to normalize. Most likely this is referring to phototherapy to treat jaundice, a common condition with preemies.
Beyoncé herself has been cleared to go home, but she doesn't want to leave the hospital until her babies can come with her.