Milly O'Naire and Penny Less was a British comic strip created by Sid Burgon for the first issue of Jackpot on May 5, 1979. It later merged with 'Ivor Lott and Tony Broke' (from Cor!!) and continued in Buster.
The comic strip centered on a snobby rich girl, Milly O'Naire, and a poor girl, Penny Less. It has often been compared to Ivor Lott and Tony Broke, a strip by Reg Parlett with a similar premise, only with two boys. In January 1987 a crossover was made between these characters.
References
Milly O' Naire and Penny Less Wikipedia(Text) CC BY-SA