Shotgun Willie’s, a longtime Glendale strip club, is getting a major makeover.

The club will erect a new building adjacent to the existing one — at 490 S. Colorado Blvd. — and will remain open during the nine-month construction period.

Majority owner Debbie Matthews said Thursday the new Shotgun Willie’s, which will cost about $3.5 million, will be slightly larger than the current club and will include more amenities, with upgrades to the lighting, sound and food.

The new club, on a parcel that wraps around the existing club to the east, will be 10,800 square feet, compared with the current 7,000 square feet.

The new club will have a ballroom about 10 percent larger than the existing 4,500-square-foot ballroom, she said. It will expand from seven stages to eight, “with a hidden stage that will open up when we get busy.”