Singer Christina Aguilera knows a sweet pic when she sees one.
Pregnant by fiancé Matt Rutler with her second child, she posted an Instagram pic of her 6-year-old son Max protectively putting his hand on mom’s big belly.
She captioned the pic, “Max already protecting mommy & his little sister! He’s the greatest #maxthegreat”
The baby girl will soon join big brother Max, Aguilera's son with ex-husband Jordan Bratman.