Lauren Loud was born on June 1, 2015. She is the youngest child of Lynn R. Loud and Rita Loud. She is learning to speak and is able to walk independently. Like her eighth cousin with a similar name, she tends to poop in her diapers, which leaves a foul stench that disgusts her older siblings. She has no annoying habit whatsoever since she doesn't cry too often.
Like her eighth cousin, Lily, Lauren is always happy and enjoys being with her siblings, and is also aware of her siblings' antics despite being a baby. She seems to understand her siblings very often, and loves to be near her siblings, and is mostly seen in care of Richard, Lori, Leni, Lynn, and Lola, who seem especially close to her.
Lauren sometimes just wears her diaper and has one prominent tooth and a tuft of blonde hair. She wears a lavender t-shirt and blue pants, however, unlike her distant relative with the same name, she wears a silver crucifix.