Pregnant Tamsin Egerton covers her bump in chic coat dress as she's joined by boyfriend Josh Hartnett for cultured visit to London art fair Read

By Becky Freeth for MailOnline

Published: 14:10 GMT, 13 October 2015 | Updated: 17:43 GMT, 13 October 2015

She's previously credited beau Josh Hartnett with being behind her enviable wardrobe.But now that Tamsin Egerton is pregnant, the actress has evidently been rewriting the rule book with another chic addition on Tuesday afternoon - and it included a black coat dress over jeans.

And the 26-year-old took a cultural trip to Regent's Park's Frieze Art Fair 2015 in London along with her handsome man, for what appeared to be quite the cultured day trip.

The expectant mum drew attention to her super-slender legs with skinny jeans peeping beneath her oversized top. She paired the look with black ankle boots and a bright blue YSL bag on her shoulder as she posed in front of the artbook. Read more: http://www.dailymail.co.uk/tvshowbiz/article-3270756/Pregnant-Tamsi...