Oliver Hudson's son, Wilder Brooks, has some big changes coming his way, and his parents seriously can't believe it.MORE: Oliver Hudson is delighted as his popular TV show is returning - and he has the best responseThe actor revealed to fans that his eldest has officially graduated eighth grade, and is headed to high school.He shared a glimpse from the bittersweet graduation weekend as the family bid farewell to Wilder's middle school.WATCH: Oliver shares health update with fansMORE: Oliver Hudson's unnerving new photo from prosthetics chair has fans saying one thingOne photo he shared sees his wife, Erinn Bartlett, posing alongside her 14-year-old, donning a billowy white dress with voluminous sleeves and black aviator sunglasses, as her son looks as dapper as she looks chic, sporting a white button and shaggy blonde hair.Appropriate as he may have looked at his eighth grade graduation, Erinn couldn't couldn't resist to make a note of the typical mom urge to fix up your kids' looks, joking: "Anyone else miss the days when you could dress and cut your teenagers hair?"The mom-of-three kept on reminiscing over her son in her Instagram Stories, expressing how everything happens in the blink of an eye.