Instead, the 11,000-square-foot Altadena Girls space in Pasadena’s Old Town is a center conceived for girls by a teenager herself, with help from her mom. Altadena Girls will be a third space for teen girls according to Avery and will include confidence and skill building with beauty and a music room. Altadena Girls will be a third space for teen girls according to Avery and will include confidence and skill building with beauty and a music room. Altadena Girls will be a third space for teen girls, according to Avery and will include confidence and skill building with beauty and a music room. How Altadena Girls went viralCelebrities, social media influencers and major brands started paying attention to Altadena Girls immediately after its initial Instagram post on Jan. 10.