The former Saved By The Bell star and husband Brady Smith are already parents to daughter Harper Renn, four, and little Harper's ready for their family to expand!
Tiffani told E! News: "We're working on it. My daughter is more pressure than anyone else that I ever get. She wants a sibling so badly!"
The actress said whether Harper wants a brother or sister "depends on the day and what kind of mood she's in."
If Tiffani did expand her family, she'd be in good company: her former Saved By The Bell co-star Mark-Paul Gosselaar has just announced his wife's expecting another child!
Mark-Paul has revealed wife Catriona McGinn is pregnant with their second child. He's also dad to two other kids from a previous relationship.
Other Saved By The Bell stars to become parents include Elizabeth Berkley, who is mum to son Sky, and Mario Lopez, who is dad to daughter Gia and son Dominic.
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