The actress and singer, who announced her split from husband Mike Comrie earlier this month, is currently working on her new album which will act as a follow up to her 2007 release, Dignity.
Lizzie McGuire star Hilary, who is mum to one-year-old son Luca, had her hands full as she prepared to throw herself into a day of recording.
Hilary dressed casual and clutched onto the edge of her laptop and adapter plug, while holding her mobile phone and bright orange bag in the other hand.
Teasing new music to fans, Hilary said that her producer was "working on something crispy" in the studio.
The 26-year-old, who has been juggling family life with music after stepping back into the recording studio in September, told fans in a Twitter Q&A in August that she was "exploring a lot of cool options" with her new album.
Following her studio session yesterday, Hilary slipped away to enjoy some chill time with Jack Osbourne's wife, Lisa Stelly.
Tweeting a photo of the pair, Hilary said: "Busy busy day, recorded a song.. took Luc to school, din, bath time, lil catch up with m'lady friend @mrslisao now...."
Hilary, 26, has been surrounded by her close friends following the news of her "amicable" split with Mike.
Earlier in the week, the blonde joined a friend in LA to watch Justin Timberlake in concert, and Hilary looked like she was having a good time as she waved her hands in the air to Justin's pop hits.
Captioning a photo, she said: "Meeee and @loveafineline havin a lil fun #justin #forum."
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