Well, tell us something we don’t know! Best friends Alli Simpson & Madison Pettis are best friends and they’ve got proof! Check out the duo in the video above, which is called “Best Friend Tag.” Alli’s birthday is also today and Madison tweeted this: “HAPPY 14TH BIRTHDAY to my best fwiend @TheAlliSimpson!! Love you!!! Xoxoxo” along with this photo:

Photo Credit: Madison Pettis's Instagram

Zendaya Coleman celebrates her 15th birthday on the beach with her family, close friends and cast mates! Attendees included: Davis Cleveland, China Anne McClain, Kenton Duty, Stefanie Scott, Alli Simpson, Madison Pettis, Blake Michael, Allisyn Ashley Arm and more!

Madison Pettis celebrated her 13th birthday a while back (and we were there to enjoy the festivities!!) and the actress has this awesome video to remember her fun night! Check out Madison’s video above, which includes tons of celebrities, including Cody Simpson‘s rendition of “Happy Birthday” and interviews from Jaden Smith & Rico Rodriguez!

Madison Pettis turned 13.. in style! Madison Pettis, star of Disney Channel’s “Cory in the House”, The Game Plan and the new Canadian (soon to be US) series “Life with Boys” (from the creators of “Hannah Montana”) celebrated her 13th Birthday last night at Eden in Hollywood. Click HERE to see photos from the star-studded birthday bash! We were at the bash and got some of Madison’s friends to give the new teenager some advice. Check out the video above to see who makes a guest appearance!

Cody Simpson and Alli Simpson make their movie debut! The brother and sister duo team up in what seems to be Alli’s movie entitled “Brittany’s Nerd”: a mini movie, by Alli Simpson (actress). The movie also features Madison Pettis! Check it out above.

Be nice to the nerds, they could be your boss one day! It’s not what you look like on the outside, it always stays the same inside.

P.S. You also get a glimpse of Cody’s closet!

The new music video for Cody Simpson‘s single “All Day” is finally here! Check out the video below… and look for some other famous celebs- Madison Pettis & Jessica Jarrell to name a few.

Australian pop star Cody Simpson is one lucky guy! Not only did Pastry shoes sponsor his party, which shut down Santa Monica Pier, but Cody also had Nick Cannon DJ his party!

We were lucky enough to head inside the party where guest included Bella Thorne and Kenton Duty from Shake It Up, Debby Ryan from The Suite Life on Deck,

Rico Rodriguez from Modern Family, Raini Rodriguez from Prom, Madison Pettis, Alfredo Flores, Diggy Simmons and many more!

Cody’s friend Jessica Jarrell also sang the birthday boy “Happy Birthday”!

Check out the video above to see exclusive snippets from inside the party!