Nicole Richie & Joel MaddenBaby boutique Petit Tresor in Los Angeles has done healthy business this week after both Nicole Richie and Christina Aguilera gave birth at the weekend.

Nicole gave birth to a baby girl last Friday but as they had waited until the birth to find out the baby’s sex, new granddad Lionel Richie hadn’t known whether to buy pink or blue - so went pink crazy once Harlow Winter Kate Madden made her grand entrance.

According to the New York Daily News, Grandpa bought five organic blankets in pink, a pink silk photo album, sheets embroidered with pink rosebuds and a silver heart-shaped rattle.

Honorary aunt Paris Hilton also followed the theme, buying a pink cashmere sweater, My Blankee hooded towels and a HuddyBuddy tshirt with a pink vintage rock tshirt design proclaiming, ‘Play It Loud’.

Meanwhile Gwen Stefani - herself a mum of a little boy, Kingston - ordered a $1,200 designer diaper bag for friend Christina Aguilera to celebrate the birth of her son, Max.

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