Beyonce for House of Dereon (Photo : House of Dereon)

The Knowles sisters are dominating the fashion world today as both their ads made its debut. Solange fronts Madewell's fall collection while her big sis, Beyoncé stars in the family's fashion line, House of Dereon.

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Solange stars in Madewell's fall ad campaign

Beyoncé is featured walking in a desert dressed head-to-toe in some Dereon bad girl threads. The usually glamorous superstar showed her rebellious side. Donning a black hat with rugged and studded boots, Beyoncé perfectly represents the brand's direction for the fall season.

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The new collection consists of leather vests, printed maxi-skirts, sheer cut-outs, leather pants (Beyoncé's aspiring BFF Kim Kardashian may love those), and plenty other rocker boho-chic styles.

The House of Dereon designer and mom of the singing sisters, Tina Knowles, stopped by "Access Hollywood" on Tuesday to dish on the new collection and update fans on baby Blue Ivy. When asked about her 7-month-old granddaughter, Knowles responded "Blue Ivy is wonderful, I just saw her yesterday, she's starting to scoot to crawl so that's exciting." She went on to say that the whole family is spoiling the little one but that there's one family member in particular that spoils her the most. Many would expect daddy Jay-Z to be the one doing the most spoiling; he did jokingly predict that he would turn his daughter into a brat. However, it is actually baby Blue's megastar mom that just can't say "no." Knowles recounted a time where Beyoncé coddled her first born. "I put the phone in front of [Blue], and I was like [to Beyonce], 'Let her crawl', and she starts looking up at her mom and her mom carries it to her," Knowles said. She added,"[I tell Beyonce] like you gotta man up and get a little tougher."

Knowles also revealed the adorable nickname for the baby - "Blue Blue." Both of Tina Knowles' daughters are mothers; Solange has a 7 year old son named Daniel Julez Smith, Jr.

Watch Knowles discuss baby Blue and House of Dereon below.