Rumer Willis has given birth to a baby girl. The 'House Bunny' actress and her partner Derek Richard Thomas welcomed daughter Louetta Isley into the world earlier this month and have shared a photo of the dark-haired tot with fans. Showing off the sleeping newborn on Instagram, Rumer wrote: "Louetta Isley Thomas Willis [stars emoji] "You are pure magic "Born at home on Tuesday April 18th "You are more than we ever dreamed of (sic)" The 34-year-old actress celebrated her impending motherhood at a baby shower last month.