Children's clothing retailer Gymboree Corp has reported a jump in third-quarter earnings to $6.3 million, up from $1.8 million in the same period last year. 

It said the increase was helped by strong sales and reduced interest expense on lower debts. Sales rose 8 per cent to $144.1 million, and same-store sales were 7 per cent ahead.

The company expects full-year earnings of 75 cents to 77 cents a share.