Ashlee Simpson: Bronx is a fashionista

Ashlee Simpson's son "loves" wearing girls' leggings.

The Boyfriend singer has four-year-old Bronx with ex-husband Pete Wentz, who she divorced in 2011. Despite having rock stars as parents, Ashlee revealed her little boy is confident when it comes to picking his own style and describes him as a "rock 'n' roll rebel".

"He always lets us know exactly what he likes and doesn't like - even with what I wear," Ashlee laughed during a joint interview alongside her mother Tina Simpson with Us Weekly magazine.

"Bronx is the biggest fashionista! He loves the girl leggings - he wears them all the time!" Tina chimed in.

Ashlee's older sister Jessica recently became a mother for the second time to son Ace with fiancé Eric Johnson. The couple also have daughter Maxwell.

Ashlee, who has been dating actor Evan Ross since July, has nothing but praise for her sibling and adores her new nephew.

"[Jessica's] really amazing. She's so good [as a mom] and Ace is such a doll," she gushed. "We've all fallen in love with him and Jess is really overwhelmed with happiness."

Both sisters and their mother have worked together on the Jessica Simpson fashion line. The 28-year-old singer loves spending time with her family and especially enjoyed stepping in as the face of the brand, ahead of Jessica giving birth in June.

"I get to work with my mamma and sister and we really have fun together. It's amazing," Ashlee added.