Complex sentence: He also has six nieces and nephews, who have all appeared in his shows at one point, Kaia being the eldest, along with 2 seccond cousins, Ruby, 13 and Adam 11.
Split into simpler sentences: He also has six nieces and nephews, who have all appeared in his shows at one point, Kaia being the eldest. Along with 2 seccond cousins, Ruby, 13 and Adam 11.