Hilary Duff [ tickets ], who spent several weeks touring Canada early in the year, will be headed back to that country for more dates later this summer, as well as a few shows on the south side of the border.

The singer/actress will kick off a stretch of shows June 30 in Kelseyville, CA, before heading north for a July 22 concert in St. John's, Newfoundland, the first of four Canadian dates as Duff continues to support last year's odds-and-ends album, "Most Wanted."

Several US dates will follow, including a Sept. 24 fair appearance in Puyallup, WA.

Duff recently made news by firing back at a New York Times movie critic, Stephen Holden, who has consistently panned her acting attempts.

"He doesn't really fit the demographic," the performer told Elle magazine. "So I could really care less. Look at me, and look at where he is--sorry! Would he prefer that I take some super-adult role that is inappropriate so I would have no place to grow?

"Suppose the next thing I did was this super-edgy independent movie where I was pregnant or shooting up. What would that do to my fan base?"

Last August, Duff issued "Most Wanted," a compilation of seven previously released songs, three remixes and three original cuts. The disc sold about 100,000 copies during its first week in stores, enough to debut at No. 1 on The Billboard 200 album chart.

Duff's most recent collection of all-new material is her self-titled sophomore set, which surfaced in 2004.