First Glasgow revealed it will offer a two-for-the-price-of-one deal on First night bus services throughout December and January.
It will mean two people can travel home for £2 on 11 late-night services departing from Glasgow city centre at the weekend.
Regular First customer Coral Holmes, from Paisley, dressed in a onesie to promote the "2 for Onesie" offer.
The 20-year-old communications executive said: "My friends and I always get the night bus home after a night out in the town. It's a simple and cheap way to get home and is much better than waiting for a taxi."
Coral was joined by 19-year-old Guilo Girasoli from Shawlands to launch the initiative. First's night buses operate between 12.30am and 4.30am at weekends from Glasgow city centre for a flat fare of £2, or £3 for travel to Lanarkshire.
They operate on key routes across Glasgow and Lanarkshire, including to East Kilbride, Pollok, Newton Mearns, Castlemilk, Hamilton, Motherwell, Coatbridge, Easterhouse, Auchinairn, Drumchapel and Clydebank.
First Glasgow's managing director Fiona Kerr said: "The introduction of our festive night bus fares is good news for revellers.
"It is fantastic value to transport two customers home for £2 and is sure to prove popular with customers throughout December and January."
For timetable information, bus stop information and route maps visit www.firstglasgow.com