During HAIM's appearance Thursday on Kylie Kelce's podcast, the three sisters that make up the pop-rock band said that kicking off their tour in Philadelphia was a "strategic decision."

While they grew up in California's San Fernando Valley, their mom, Donna, was born and raised just outside the city and is spending time in the area with friends and family before going to see her daughters perform at the Mann Center on Sept. 4 . MORE : Mike Jerrick is getting his own late night show on FOX29

"My mom is coming to the show on a party bus," Alana Haim said on "Not Gonna Lie." "They made their own merch in neon shirts — her whole friend group, they want us to see them."

T he band is made up of Este, Danielle and Alana Haim, who are notably friends with fellow Pennsylvania-connected

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