Shawn Mendes spent his Sunday showing off his toned arms and going shopping for plants.The 24-year-old singer was spotted leaving the farmer's market in West Hollywood, California on Sunday.He was carrying a new eucalyptus plant while showing off his toned arms during the outing. Show-off Shawn: Shawn Mendes spent his Sunday showing off his toned arms and going shopping for plantsMendes stepped out wearing a white tank top with a thin gold necklace tucked under the shirt.He also wore dark sunglasses while holding a new eucalyptus plant on his solo shopping outing. The singer completed his look with brown pants and matching brown sandals.