How to increase the size of the text inside the red circle of the cor plot?

Question

How to increase the size of the text inside the red circle of the cor plot?

Used code:

par(mar=c(1,1,1,1))
pairs.panels(data, 
             method = "pearson", 
             hist.col = "#00AFBB",
             density = TRUE,  
             ellipses = TRUE,
             pch = 21,
             cex = 1.5,
             cex.axis = 1.8,
             lwd = 2,
             rug = TRUE,
             stars = TRUE
)

Answer 1

Finally, I got the answer and i.e. to add the argument cex.labels = 2.5,

the final code is

library(psych)
par(mar=c(1,1,1,1))
pairs.panels(data, 
             method = "pearson", 
             hist.col = "#00AFBB",
             density = TRUE,  
             ellipses = TRUE,
             pch = 21,
             cex = 1.5,
             cex.axis = 1.8,
             cex.labels = 2.5,
             lwd = 2,
             rug = TRUE,
             stars = TRUE
)