Rico Rodriguez shows off his beard with Bradley Steven Perry in these new stills from the set of Good Luck Charlie.

The 13-year-old actor guest stars in a new GLC episode, “The Bob Duncan Experience.”

In this episode, Gabe (Perry) and his friend Leo (Rodriguez) start a lemonade stand, but when they can’t agree on certain details, they go their separate ways and wind up in an intense competition to see who can get the most sales – with Gabe using Charlie (Mia Talerico) as his secret weapon.

Meanwhile, Teddy (Bridgit Mendler) offers to help Emmett (Micah Williams) get a date for the upcoming dance in hopes he will release her from a promise she made 10 years ago to go with him if he couldn’t find another date. Also, PJ (Jason Dolley) decides to get Bob’s (Eric Allan Kramer) high school band back together for old times’ sake, but discovers the real reason why they broke up in the first place.

“The Bob Duncan Experience” premieres THIS Sunday, August 28th @ 8PM ET/PT on Disney Channel.

25+ pics inside…