Miley Cyrus' mother Tish Cyrus looked smitten with her beau Dominic Purcell as the duo attended the singer's televised New Year's Eve bash on Saturday.The interior designer, 55 - who ended her 28 year marriage to country hunk Billy Ray Cyrus back in April - confirmed her romance with the Prison Break hunk, 52, in November.On Tuesday, she shared a post-party slideshow to her Instagram that featured three snapshots of herself and Dominic looking loved-up during the festivities. Smitten: Miley Cyrus' mother Tish Cyrus looked smitten with her beau Dominic Purcell as the duo attended the singer's televised New Year's Eve bash on SaturdayTish showcased her slender frame in a a sparkly one-shoulder gown that showed off her killer legs through a thigh-high slit.The mother-of-five's golden blonde hair tumbled down her back and chest in waves as she strolled the red carpet with her man.