04/28/2010 05:12 am ET Updated May 25, 2011

Lindsay Lohan's Party Marathon

Lindsay Lohan recently declared she is healthy and happier and has put her substance-abuse problems behind her" but her recent behavior may suggest otherwise.

After trips to London and Atlantic City, N.J., Lohan, 23, is back in Los Angeles, where she has been out late for three consecutive nights.

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