LOS ANGELES - Lara Flynn Boyle will return to FOX's "Ally McBeal" on April 22, but it won't be in the same role as last time.

In 1997, Boyle stopped by David E. Kelley's other show as her character Helen Gamble from ABC's "The Practice" to trade barbs about sharing a cookie with the equally svelte Calista Flockhart.

This time around she will play Tally Cupp, a witness for the prosecution in a bigamy case. Additional guest stars for the episode include Heather Locklear ("Spin City") as the defendant, and Christina Ricci as her lawyer.

"David E. Kelley continues to attract the very best actors to guest on 'Ally,' and we are thrilled to be working with both Heather and Lara Flynn," says executive producer Bill D'Elia. "We never expected that it would be our good fortune to have both of these talented actresses in the same episode."