The current nominees were taken to a local supermarket and given four minutes each to grab as many items within the £725 budget the group won in their 'Big Spenders' challenge.
They were told that if they went over budget the house would only receive an economy food delivery, but managed to come back with three and a half trolleys worth of food for just £438.65.
Upon their return to the house, an excitable Lennard repeatedly declared that she and Sugden had "killed it" in the supermarket.
"Our f**king throats were burning, our stomachs were turning, our knees were buckling," she claimed as the rest of the group helped carry their shopping bags in.
Later, the ex-girlfriend of Simon Cowell declared: "I don't know how we spent so little - I swear a can of energy drink is £8."
Lennard is favourite to be evicted from the Celebrity Big Brother house in tonight's (August 22) first live eviction episode, which airs at 9pm on Channel 5.