Surveillance video showed them grabbing merchandise and concealing it under their clothing, according to the Long Beach Police Department.
"In both instances, the suspects were then seen exiting the store without paying for the concealed items," according to a police statement.
The suspects made their getaway in a newer-model black Cadillac Escalade.
The woman is suspected in previous thefts at other stores in Los Angeles and Orange counties, police said.
Anyone with information about the crimes or suspects was urged to call LBPD Burglary Detective Daniel Martinez at 562-570-7392.
Anonymous tips may be submitted through Crime Stoppers by at 800-222- TIPS or lacrimestoppers.org.