She’s just returned to London to welcome her newly adopted daughter, and now it sounds as if Madonna is once again on cordial terms with ex-husband Guy Ritchie.

Thanks to daughter Mercy James’ arrival, Madonna invited Guy over to meet the latest addition to her brood over the past weekend.

“He met her at Madonna’s house and they bonded immediately,” a source told the Daily Star. “He nicknamed her Koala, as she has this habit of clinging to people and not letting go.”

She’s never been known for her good judgment, but nonetheless Lindsay Lohan says she has the best work ethic in Tinseltown.

In a recent interview, the “Mean Girls” actress did a bit of bragging about her penchant for ambition, giving herself props for putting her nose to the grindstone.

She explained, “It’s not that hard to be me, but I do work harder than most of my friends’ parents. I am the hardest-working person I know. I’m a workaholic. I don’t know what to do when I’m not working. I get creatively frustrated.”

He’s no stranger to international travel, and last night (June 29) Justin Timberlake was spotted out and about in London’s ‘Mayfair district.

The “SexyBack” stud looked to be having a good time as he hit up Guy Ritchie’s haunt The Punchbowl, sporting a dark denim jacket with a black t-shirt and black jeans.

Earlier in the evening, JT and his business partner/pal Trace Ayala were over at Selfridges department store to unveil their William Rast Fall 2009 Collection.

They’ve been taking their new movie all over the world, and last night (June 29) Ryan Reynolds and Sandra Bullock were spotted at the German premiere of “The Proposal.”

The “Van Wilder” funnyman and the “Miss Congeniality” babe looked to be having a marvelous time as they arrived at the Mathaeser Filmpalast cinema in Munich for the big event.

Both fans of hamming it up in front of the cameras, Ryan and Sandra were more than happy to strike a plethora of poses for the German paparazzi before finally heading inside.

They’re no strangers to the world of retail therapy, and yesterday (June 29) Kim Kardashian and Reggie Bush did some serious shopping.

Joined by gal pal LaLa, the “Keeping Up with the Kardashians” babe and her hunky beau checked out the Chanel boutique on Robertson Boulevard amidst a sea of paparazzi.

In related news, Kim helped her sister Khloe celebrate her birthday over the weekend with a trip to Las Vegas with their friends.

Proudly showing off their two new bundles of joy, Sarah Jessica Parker and Matthew Broderick posed for a new family portrait with their baby twins!

Having welcomed twin daughters Marion and Tabitha just over a week ago via a surrogate mother, the “Sex and the City” star and her thespian hubby released a brand new picture of the baby girls, along with their eldest son, James Wilkie.

Showing off one of the stranger hairstyles to be seen in recent memory, Lady GaGa ventured out in Manchester, United Kingdom on Monday (June 29).

The “Poker Face” singer was visiting volunteers in the Orange Rock Corps scheme, donning a hairdo fashioned in the shape of a giant button.

Meanwhile, GaGa recently refused to address rumors that one of the members of the Pussycat Dolls came onto her.

Taking her signature sound to Malaga, Katy Perry was spotted performing at the CostaSol Festival last night (June 28).

The “Hot N Cold” hottie took the stage sporting an array of outfits as she played through her hit-filled set list as part of the festival’s star-studded lineup.

In related news, Miss Perry recently celebrated her recovery from influenza with a bathtime pizza treat, complete with a tweet.