Urban Outfitters (URBN) - Get Report   and Five Below (FIVE) - Get Report  shares fell Monday morning, the latest brick-and-mortar retailers to disappoint Wall Street with their holiday sales.

Urban Outfitters fell almost 1% to $27.16 in Monday morning trading after disclosing that "lower store sales" required increased promotions to drive demand. Five Below slipped 3% to $38.53 after reducing its outlook due to quarter-to-date performance.

Urban Outfitters saw a shift toward its direct-to-consumer channel and away from its retail stores, which created the need to run steep discounts and will likely affect gross margin more than previously expected, the company said in a statement.

Total sales rose 3% for the two month period ended December 31, while same-store sales were up 1.5% for all three of its branded stores. 

Same-store sales rose 3.6% at Urban Outfitters stores and 2.9% at Free People stores, but fell 1% at Anthropologie Group stores.

Five Below saw total sales increase 18% year-over-year to $349.3 million between October 30 and January 7, with same-store sales up 0.5% during the period, but saw sales decline before Christmas. 

"After a solid start to the holiday season, we experienced softness in mid-December, including Super Saturday, with sales accelerating later in the holiday season," CEO Joel Anderson said in a statement.

The retailer consequently lowered its current-quarter and full-year outlook.

Five Below now anticipates fourth-quarter earnings between 88 and 89 cents a share on revenue between $386 million and $388 million, down from earnings between 89 and 92 cents a share on revenue of $391 million to $397 million.

For fiscal 2016, the retailer lowered its earnings outlook to between $1.28 and $1.29 a share from $1.29 to $1.32 a share, and cut its revenue forecast to between $998 million and $1 billion from $1.003 billion to $1.009 billion.

Today's announcements come after retailers including Macy's (M) - Get Report , Kohl's (KSS) - Get Report and L Brands (LB) - Get Reportissued fourth-quarter profit warnings last week, fueling concerns about the future of brick-and-mortar retailers.