Danica Dalziel, Emma Mitchell, Julie Melrose and Emma Fernon were on target for the SWPL champions, who lead Hibs by six points.
Celtic lost 1-0 at home to Spartans, while Rangers went down 5-0 at Hamilton.
Clydesdale Cup final: Lanark v Carluke.
Friendlies: Airdrie Utd XI v Rob Roy, Bo'ness v Pollok, Glenafton v Hurlford, Kilmarnock v Bristol City (7.45), Whitletts v Partick Thistle XI, Vale of Leven v Kelvinbridge Amats.
Ramsdens Cup. 1st round: Brechin 1, Rangers 2.
Friendly: Accrington Stanley 1 St Mirren 1.