Teen-apparel chains reported a mixed bag of May sales results after Wednesday's closing bell.

American Eagle Outfitters

( AEOS) said its same-store sales rose 11%, beating analysts' average expectation for a 9.3% gain, according to Thomson First Call.

"May sales were driven by a favorable customer response to the summer assortment and ongoing strength of the American Eagle brand," the company said.

The teen-clothing retailer reiterated its second-quarter earnings forecast of 39 cents to 41 cents a share.

Meanwhile,

Aeropostale

(ARO)

logged an unexpected decline in its May same-store sales, or comps. The mall-based teen-apparel chain said same-store sales slipped 1.1% after analysts had predicted a small increase. The company noted, though, that it was able to maintain its gross margin projections because of increases in its merchandise margins.

Tough times continued at

Hot Topic

( HOTT), which posted a 6% decline in comps for the month. That was a bit worse than what Wall Street was expecting, and it came on top of a 2% decline in the same month last year.

For its part,

Zumiez

(ZUMZ) - Get Report

held sway with young, extreme-sports enthusiasts. The seller of action-sports products reported that its same-store sales jumped 18.2%, easily surpassing Wall Street's forecast for a 6.8% gain.

The majority of retail chains are expected to report sales early Thursday.