Beyonce twins in hospital "under the lights" after being born prematurely

Beyonce 's twins are being kept in hospital as a precaution after being born prematurely, sources say.

The boy and girl are said to be "under the lights" - a common treatment for jaundice, which sometimes occurs in premature babies.
Sources told TMZ that the babies are expected to make a full recovery after being placed under lights to lower bilirubin in the blood to eliminate the jaundice.