Holly Marie Combs and longtime boyfriend David Donoho reveal they are expecting their first child together in April in the upcoming issue of TV Guide.

Combs, who got her big break as Tom Skerritt's daughter on Picket Fences, is best known as sorceress Piper Halliwell on the WB's Charmed.

Donoho, whos reportedly lived with the thesp since 2001, works as a key grip on the series.

It's a first child for both.

Combs was married to fellow actor Bryan Smith from 1993 to 1997 and briefly engaged to civilian Storm Lyndon before they split up in 2000.

Producers say Combs' real-life pregnancy will be worked into the show in time for February sweeps. But they're keeping mum on Piper's sperm donor. "Who says there is a father?" teased executive producer Brad Kern to TV Guide.

It's a go-around of sorts for Combs' character, who was happily married to Whitelighter Leo Wyatt and delivered the series' first baby during February sweeps last season before she split with her TV hubby.