Something strange is going on...

I bought this pretty money tree (pachira) about a month ago. It had 6 nicely braided stems and a neat ball of healthy, green leaves. It was less than 2 feet tall. Such a perfect plant!

In a week it simultaneously put out ten new leaf growths. I was really happy ! They kept on growing and growing, larger and larger. Those new leaves are like monster giants compared to the old leaves!

One single leaf (a stem has 5-7 leaves attached to the center) measure over 10 inches and 3 inches wide! Plus, the stem is so tall that it looks like "tall sticks" waving in the air! Even the largest of the old leaves are 5 inches long and 1-2 inches wide. These gigantic new leaves don't match with the plant!

I don't know what's causing my plant to suddenly sprout gigantic leaves over twice the normal size. Now my plant looks very...uh...strange, though I sure am glad it's healthy! Any ideas?

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~Lily