Justin Bieber's mom Pattie Mallette says "I want more kids" on Twitter. Credit: Frazer Harrison/AMA2012/Getty

Doesn't she have her hands full with one superstar child? Regardless, Justin Bieber's mom Pattie Mallette tweeted that she'd like to have another baby.

On Thursday, March 6, the 37-year-old Canadian author shared two photos of herself holding another person's baby girl. "A baby looks good on me eh? (Yep still Canadian). #iwantmorekids!" she wrote as the caption. In the snapshots, Mallette flashes a big smile while cradling an adorable little girl, who is wearing a white dress and matching flower headband.

Mallette has been a single mom of one since giving birth to Justin in 1994 at the age of 17. She and Justin's father, Jeremy Bieber, whom she began dating at the age of 15, split 10 months after Justin's birth.

Her only son, 20, has been keeping her pretty busy lately, having recently been arrested for DUI back in January. After the incident, a source told Us Weekly that Mallette was frustrated with her son's behavior. "Now she's telling him he has to fix his attitude and own up to his mistakes," the source explained at the time.

Though Mallette has never married, Justin's dad went on to marry someone else, Erin Bieber, and has two other children. Justin is the older half-brother to Jazmyn, 5, and Jaxon, 4.