Photo SpecialBritney: Life After Baby

From family fun to spousal spats, see how things have changed for the Federlines since son Sean Preston's arrival. By Emily Fromm

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DEC. 26

The day after Christmas, Spears shopped in Malibu with brother Bryan (left) and sister Jamie Lynn. The singer had been looking forward to Sean Preston's first holiday: Back in November, she told PEOPLE, "I already started putting up a few of the decorations myself because I couldn't wait!"

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