Christina Aguilera said that she changed the shade of her lipstick for her baby. She added: "But I have been using this kiss-proof red lipstick recently so I can kiss Max without getting kiss marks all over him."

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"I love having red lips. There's just something fun and vibrant about it. I love that extra little 'pop' to any look, no matter how simple or strong the rest of the face is," said Aguilera, 28.