NRichie051808_001_X17.jpgNicole Richie NRichie051808_002_X17.jpgShe may not have been planning a pregnancy, but Nicole seems to be settling into motherhood quite nicely!

Nicole, still managing to look casually chic while pushing a stroller, took baby Harlow out for a stroll with daddy Joel on Sunday, the day after the duo attended Ashlee Simpson's wedding.

Think watching Ashlee walk down the aisle has given the Richie-Maddens more incentive to do the same?