Would you like fry slides with that?

McDonald’s is celebrating its expanded #McDelivery service in 4,200 new restaurants across 13 countries on Wednesday by dishing freebies from its new clothing line when customers in select cities order through the UberEats app.

See also: McDonald’s is releasing a limited edition line of Big Mac merch

The kitschy adult Happy Meal swag includes a Big Mac onesie, French fry sandals and sweatsuits, a Big Mac pillowcase set, and a burger and fries picnic blanket from the McDelivery Collection. The promo kicks off at 11 a.m, and every customer who orders delivery from participating restaurants can pick a free piece of Big Merch while supplies last.

See also: This KFC smartphone looks finger-licking good

Influencers like Chrissy Teigen and Olivia Culpo, who got a first taste of the “fun, fashion forward items,” according to the press release, have already started whetting the appetites of Golden Arches fans on social.

Friend: olivia be less extra Me: Ok 🕺🏻

A post shared by Olivia Culpo (@oliviaculpo) on

McDelivery launched with UberEats in January, and is now available at more than 7,800 restaurants in 47 countries. Check mcdeliveryatmcdonalds.com for participating spots in New York, Los Angeles, Chicago, Columbus, Phoenix and more. And be ready to eat an UberEats booking fee ($4.99 on average) on top of every order.

This is just the latest move that McDonald’s customers are lovin’, according to the latest sales data. Dressing up its menu offerings with Signature Crafted Sandwiches featuring fresh beef, chicken and avocado, and serving $1 sodas, sent McDonald’s shares to an all-time high on Tuesday with a reported $6.05 billion in sales in the second quarter.