P. Diddy reportedly threw a "hissy fit" because he didn't like his all-white themed birthday party.

The rapper - who turned 39 last Tuesday - splashed out on a lavish bash at New York's Mansion nightclub later in the week but insisted the decor was scrapped at the last minute after the all-white room - designed in just 12 hours - failed to meet his expectations.

Courteney Cox threw a party to celebrate Barack Obama's success in the American presidential election on Tuesday night.

The "Friends" actress and her husband David Arquette held the bash at their Beverly Hills home, and a host of famous faces - including Jennifer Aniston, Sacha Baron Cohen and his partner Isla Fisher - attended.

Ashlee Simpson hosted a Winnie the Pooh-themed baby shower on Saturday.

The "Outta My Head" singer - who is due to give birth to her first child later this month - celebrated with 35 guests, including singer-and-actress sister Jessica Simpson, her mother Tina, actress Emmy Rossum and Nicole Richie, who brought her 10-month-old daughter Harlow.

Heavily pregnant Ashlee Simpson wants all rooms she is in set at a constant icy temperature. The U.S. singer's husband, Fall Out Boy bass player Pete Wentz, says Ashlee feels so hot all the time she has to have all rooms set to 34 degrees Fahrenheit.

Pete, 29, said: "She's hot all the time. She's like, 'I wish I was in Canada right now.' Our room temperature is set to like, 34 degrees. It's insane!"

Pete Wentz's management thought he would die at 27. The 29-year-old rocker - who is the bassist in Fall Out Boy - has revealed record company bosses feared he would follow in the footsteps of rock legends Janis Joplin, Jim Morrison and Kurt Cobain by dying at that age because he was taking so many drugs.

He said: "I spent most of the year I was 27 toxic, just completely over-medicated. I was stoked to make it past 27."

Ashlee Simpson threw a "white-trash" themed birthday party. The pregnant singer, who is married to Fall Out Boy rocker Pete Wentz, celebrated turning 24 with a fancy dress bash at her parents' Los Angeles home last weekend.

One guest revealed: "It had a white-trash theme. Ashlee wore Daisy Duke hot-pants and platform flip-flops with a bathing suit and a fake tattoo around her belly."