"When he jumped on stage to dance in my last show, I was shocked actually," Madonna revealed. "And secretly, unbeknownst to me, they're all studying privately with my dancers. And Rocco comes out and busts out, like, a moonwalk or, you know, some kind of break-dancing move."
Daughter Lourdes, 13, has also gotten into the action by appearing in Madonna's "Celebration" video and announcing she hopes to become an actress.
Surfer dude Matthew McConaughey totes son Levi during a sandy walk in Malibu.
Gwen Stefani beams at her little guy Zuma, as other son Kingston laughs and plays on the swing set in a Beverly Hills park.
Back to L.A.
Usher totes son Usher Raymond V — along with his Elmo doll — to a waiting car after landing at LAX.
Tom Brady and his little man John feed the birds at the Famous Granville Market in Vancouver.
Bronx Mowgli travels in style! The baby was snapped cuddling up to mama Ashlee at LAX in March.
A groggy Jerry O'Connell takes twin daughters Dolly Rebecca Rose and Charlie Tamara Tulip for a sunny stroll in Toronto.
Seal's Big Boy
Jump high, Johan! Seal's little son crouches in anticipation as the singer and his children spend a sunny day at the park in L.A.
Gotta Wear Shades!
Sunglasses-clad Brad Pitt took stylish tykes Shiloh and Zahara on a toy shopping spree in Washington D.C.
Hop, Skip and Jump in NYC!
Michelle Williams holds tight to the hand of daughter Matilda, as the little Heath lookalike skipped down the snowy streets of NYC in March.
A bundled up Hugh Jackman enjoys a winer walk with his daughter Ava, who scooted along during their snowy stroll.
Walkin' in New Orleans
Angelina Jolie enjoys a Big Easy stroll with three of her brood — Pax, Zahara, and Shiloh — in October 2008.
This Apple doesn't fall far from the tree! Gwyneth Paltrow was spotted walking home with her lookalike daughter after a long day at Apple's London school.
Nicole's little lady knows how to work it! The mini fashionista kept warm in a blue hat, brown jacket and Mary Jane shoes at Chelsea Piers in NYC.
New Family Member
Katherine Heigl and Josh Kelley adopted their daughter Nancy Leigh from Korea. The family says she will go by the nickname Naleigh.
Lazing in the Shade
Jessica Alba cools off in the shade at a Beverly Hills park with sundress-clad daughter, Honor Marie.
Her Future's So Bright...
…Suri's gotta wear shades! Katie Holmes and her mini-me tot both sported oversized sunglasses during a stroll on the street in NYC, November 2008.
Just Like Dad
Will Smith embraces his lookalike son Jaden on the red carpet at the 2008 MTV Movie Awards.
Tom Cruise and adorable baby Suri, dressed to the nines, make their way to the theatre where mom Katie Holmes performed “All My Sons” in NYC.
Dean McDermott and son Liam Aaron prepare to leave “Home Sweet Hollywood” as they walk through security at Los Angeles International Airport.
The gorgeous Halle Berry helps her little girl Nahla build a sand castle during a beach trip in Miami.
Angelina Jolie is cool and collected with all six kids in tow at the Narita Airport in Japan — including daughter Vivienne, who she carried on her chest.
Actor Jude Law takes his lookalike daughter Iris on a shopping spree in London.
Shop with Pop
Little Valentina Paloma holds on to dad Francois-Henri Pinault as they enjoy a clothing shopping trip without mama Salma Hayek.
Crikey! Russell Crowe joined his son Charlie playing games in a park in his native Australia.
'90210' star Jennie Garth gives daughters Luca Bella and Lola Ray a lesson in helping others during an event to help build a playground for under-privileged kids in L.A.
Slim in the Springs
Tori Spelling shows off her bikini body during a pool dip with daughter Stella in Palm Springs, CA.
Harlow Takes a Dip
Good Charlotte rocker Joel Madden gets his feet wet with splash-happy daughter Harlow in Miami.
View from the Top
Alexander “Sasha” Pete Schreiber and dad Liev Schreiber left mom Naomi Watts at home for a lunch at Cafe Habana in SoHo.
Summer in Rio
Katie Holmes is casual chic during a shopping trip with daughter Suri in Rio de Janeiro.
Saint Tropez Sippy
Salma Hayek treats daughter Valentina to an icy drink during an outing in Saint Tropez.
Purple and Gold Pride
Aw! David Beckham shares his passion for basketball with son Brooklyn, decked out in Lakers threads, courtside at a game.
Camila's Little 'Dude'
Levi McConaughey donned an adorable plaid shirt and tiny moccasins while flower shopping with mama Camila Alves.
Heidi Klum looks on as children Leni, Henry and Johan chase each other around the Grove in Los Angeles on a sunny spring day.
Halle Berry's baby girl Nahla Ariela grins at shutterbugs during a shopping trip in L.A.