Pregnant Halsey enjoys 'sleepy happy days'... as she shares an assortment of smiles

Halsey wears yellow wig and plunging psychedelic top in '60s makeover to promote new make-up range

Halsey looks fresh-faced as she bares her budding baby bump during a grocery run in Malibu

Halsey shows off new yellow hair while promoting makeup line drop with '60s/70s vibes' on Instagram