Selena Gomez bares her taut midriff in black crop top and skinny jeans to bond with mother Mandy and baby sister Gracie

She kicks off her 56-city Stars Dance Tour in just four days.

And Selena Gomez made sure to spend quality time with her mother Mandy Teefey and baby sister Gracie at the Topanga Mall in Canoga Park Saturday.

The 21-year-old starlet bared her taut midriff in a sheer black crop top, matching skinny jeans, and buckled booties.

Hitting the road in four days! Selena Gomez spent quality time with her mother Mandy Teefey and baby sister Gracie at the Topanga Mall in Canoga Park Saturday

Scraping her hair into a messy ponytail, the Come & Get It singer finished off her fuss-free look with an Army waistcoat, Chanel purse, and hoop earrings.

Selena hauled a grey luggage trolley while the former actress pushed her two-month-old sister's stroller.

The three ladies went out for breakfast together before shopping at Nordstrom.

Spending quality time: The three ladies went out for breakfast together before shopping at Nordstrom

Incognito: The 21-year-old starlet bared her taut midriff in a sheer black crop top, matching skinny jeans, and buckled booties

Calm before the storm: It's a good thing Selena spent some time bonding with her much younger sibling as her worldwide tour won't end until November 27

Blending in: Scraping her hair into a messy ponytail, the Come & Get It singer finished off her fuss-free look with an Army waistcoat, large sunglasses, and hoop earrings

Gomez was first seen cooing over Gracie while enjoying a Malibu picnic back in June.

'It's crazy. There’s a 21-year age gap, which is okay,' the Spring Breakers actress told the Associated Press.

But it's actually really amazing because we won't be fighting over boys or clothes, so I’ll be able to be a cool aunt in a way.'

'I’ll be able to be a cool aunt': Gomez was first seen cooing over baby sister Gracie while enjoying a Malibu picnic back in June

It's a good thing Selena spent some time bonding with her much younger sibling as her worldwide tour won't end until November 27.

The Wizards of Waverly Place star will be joined on the road - beginning August 14 in Vancouver - by opening acts Emblem 3 and Christina Grimmie.

She'll also play a gun-toting hacker in the action-crime flick Getaway starring Ethan Hawke and Jon Voight - due out August 30.

Stars Dance Tour: The Wizards of Waverly Place star will be joined on the road - beginning August 14 in Vancouver - by opening acts Emblem 3 and Christina Grimmie

Coming August 30! Selena will also play a gun-toting hacker in the action-crime flick Getaway starring Ethan Hawke and Jon Voight